Prompt 2 of 7
Name a sea animal that isn't a fish or a bird
11826 accepted answers across 5 rarity tiers.
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100 ptsOne in a Krillion1 answerShow answersHide answers
The rarest possible answer — almost no player finds it.
- Hoff crab— Nicknamed for David Hasselhoff's hairy chest.
85 ptsDeep Cut11608 answersShow answersHide answers
Genuinely obscure. Most players never think of it.
- 'coon oyster
- Abalone barleysnail
- Abalone piddock
- Abalone visored shrimp
- Abbott's Cone
- Abbreviated cone
- Aberrant toothshell
- Abyssal crangon
- Abyssal horny sponge
- Abyssal murex
- Abyssal sea urchin
- Abyssal star
- Abyssal sumo crab
- Acadian hermit crab
- Acan coral
- Accordion worm
- Acoel flatworm
- Acorn barnacle
- Acorn cone
- Acorn hairysnail
- Acorn worm
- Acquisitive sponge
- Acropora coral
- Acropora crab
- Acropora-eating flatworm
- Actor top
- Aculeate rock shell
- Acuminate mitre
- Acute barleysnail
- Acute kaloplocamus
- Adam spiny margarite
- Adam's dwarf triton
- Adamantine sea pen
- Adams alabine
- Adams miniature cerith
- Adams mussel
- Adanson's moon snail
- Adanson's pleurotomaria
- Adanson's tagelus
- Adele's dwarf olive
- Adele's Nutmeg
- Adhesive anemone
- Admiral cone
- Adonis shrimp
- Adriatic horse mussel
- Adriatic ovula
- Adunca murex
- Adusta miter
- Adusta murex
- Aegean nutclam
- Aesop shrimp
- Aesop slipper lobster
- African berry moonsnail
- African Blue Swimming Crab
- African Chromodoris
- African Clawless Otter
- African cuttlefish
- African fan scallop
- African ghost crab
- African knife clam
- African lobster
- African matchbox crab
- African mud crab
- African mud shrimp
- African mussel
- African periwinkle
- African pillow coral
- African red knob sea star
- African softshell turtle
- African spear lobster
- African spider shrimp
- African squid
- African venus
- Agassiz's cadulus
- Agassiz's chromodorid
- Agassiz’s coral
- Agassiz's deep-sea soft coral
- Agassiz's flapjack octopod
- Agassiz's gilded coral
- Agassiz's nutmeg
- Agassiz's peanut worm
- Agassiz's sidegill
- Agassiz's whiplash squid
- Agate cone
- Agate troughshell
- Aggregated nipple horny sponge
- Aggregated nipple sponge
- Aggregating anemone
- Aggregating jelly
- Aggregating sea cucumber
- Agulhas spider crab
- Aiptasia
- Airy finger sponge
- Ajar cardita
- Aka coral
- Akemate razor shell
- Akiami paste shrimp
- Akutan limops
- Alabaster jewelbox
- Aladdin's lamp tunicate
- Alamang shrimp
- Alaska argid
- Alaska coastal shrimp
- Alaska dwarf-mussel
- Alaska eulima
- Alaska glass-scallop
- Alaska great-tellin
- Alaska razor
- Alaska shrimp
- Alaska stony coral
- Alaska tree coral
- Alaska volute
- Alaskan anemone
- Alaskan hermit
- Alaskan horny sponge
- Alaskan pink shrimp
- Alaskan skeleton shrimp
- Alaskan star
- Albatross aglaja
- Albatross footless sea cucumber
- Albatross lobster shrimp
- Albatross squat lobster
- Albrecht's chiton
- Albuneid mole crab
- Alcock's fusiform sea cucumber
- Alcock's sea urchin
- Alder's natica
- Aldrovandi's panope
- Aleut whelk
- Aleutian bigeye
- Aleutian coastal shrimp
- Aleutian cockle
- Aleutian Cyclocardia
- Aleutian diplodon
- Aleutian hermit
- Aleutian macoma
- Aleutian moonsnail
- Aleutian scarlet star
- Aleutian spoonclam
- Aleutian star
- Alexander's sea urchin
- Alfred's turbonille
- Algae hydroid
- Algae octopus
- Algarve volute
- Algoa cone
- Algoa shrimp
- Ali & Orso's okenia
- Ali's dorid
- Allman's Crangon
- Aloha prawn
- Alou rock shell
- Alphabet cone
- Alternate Chromodoris
- Alternate dipperclam
- Alternate tellin
- Alveopora coral
- Amadis cone
- Amakusa Analogium
- Amanda's auger
- Ambassador cone
- Amber fish
- Amber glassy-bubble
- Amber lacuna
- Amber penshell
- Ambiguous bryozoan
- Ambiguous Chromodoris
- Ambiguous murex
- Ambon crinoid shrimp
- American black coral
- American bloodworm
- American blunthorn lobster
- American brackish water medusa
- American breadcrumb sponge
- American carriersnail
- American grass shrimp
- American pelicanfoot
- American piddock
- American Red Fiddler Crab
- American slipper lobster
- American star snail
- American talon crab
- American tellin
- American tube-dwelling anemone
- American tuskshell
- American Zoanthid
- Americana stalkeye sumo crab
- Amethyst gemclam
- Amethyst olive
- Amphipod
- Amphissa
- Amphiurgus cone
- Ample roughmya
- Anacropora
- Analogous bobtail squid
- Anchialine Pool Snail
- Anchialine snapping shrimp
- Anchor Coral Shrimp
- Ancilla
- Ancilla volute
- Ancula
- Andaman cone
- Andaman lobster
- Anderson's nudibranch
- Andrea cuttlefish
- Andres's sea anemone
- Andrews' beaked whale
- Anemone carrier
- Anemone hermit crab
- Anemone sea slug
- Anemone sea spider
- Anemone shrimp
- Angaria
- Angas's bubble
- Angas's egg shell
- Angel hair worm
- Angel octopus
- Angel oyster
- Angel squid
- Angel wing
- Angeles okenia
- Angelic okenia
- Angled modulus
- Angled olive
- Angled paperbubble
- Angled spoonclam
- Angled wedge shell
- Angola marsh crab
- Angolan flying squid
- Angolan mantis shrimp
- Angular Aclis
- Angular Brittle Star
- Angular crab
- Angular murex
- Angular pedipes
- Angular sea whip
- Angular surf clam
- Angular triton
- Angular unicorn
- Angular whelk
- Angulate cockle
- Angulate Stair Shell
- Angulate tellin
- Angulate volute
- Angulate wentletrap
- Anker's Peppermint Shrimp
- Anker's whip coral shrimp
- Anna's Chromodoris
- Annandale’s sea snake
- Anne's Phyllidiopsis
- Annulate stickhydroid
- Annulate sticky hydroid
- Annulate tuskshell
- Annulated plough shell
- Annulated sea snake
- Anomalous bathyark
- Anomalous murex
- Anomalous sea snake
- Ant-egg dovesnail
- Antarctic airy limopsis
- Antarctic blue whale
- Antarctic brachiopod
- Antarctic cardita
- Antarctic flying squid
- Antarctic fur seal
- Antarctic giant shield snail
- Antarctic king crab
- Antarctic knobbed octopus
- Antarctic legged-leech
- Antarctic limpet
- Antarctic minke whale
- Antarctic neosquid
- Antarctic Paralophaster
- Antarctic rock sea cucumber
- Antarctic scallop
- Antarctic sea urchin
- Antarctic soft-shell clam
- Antarctic stone crab
- Antarctic strawberry feather star
- Antarctic trophon
- Antarctic whelk
- Antarctic yoldia
- Antillean Caecum
- Antillean fileclam
- Antillean Hermit Crab
- Antillean limops
- Antillean manatee
- Antillean miter
- Antillean nerite
- Antillean razor clam
- Antillean scallop
- Antillean Sipunculid Worm
- Antillean sphenia
- Antillean stilt crab
- Antillean talon crab
- Antillean tuskshell
- Antilles bobtail
- Antilles glass-slug
- Antilles glassy-bubble
- Antilles nassa
- Antilles oxynoe
- Antilles trivia
- Antique ark
- Antique razor clam
- Antler coral
- Antler Sponge
- Aphelodoris
- Apple crab
- Apple murex
- Appleseed erato
- Apricot spindle
- Apricot tellin
- Aqua Fiddler Crab
- Aquarium medusa
- Aquatile hairy triton
- Ara Cerithiopsis
- Arabian cowrie
- Arabian cuttlefish
- Arabian red shrimp
- Arabian tibia
- Arabian whip lobster
- Arafura lobster
- Arafura sea snake
- Arafura shrimp
- Arcas auger
- Arch-fronted swimming crab
- Arched horny sponge
- Arched razor shell
- Arched swimming crab
- Arctic argid
- Arctic Astarte
- Arctic barrel-bubble
- Arctic black coral
- Arctic brooding anemone
- Arctic club coral
- Arctic comb jelly
- Arctic cookie star
- Arctic cushion star
- Arctic eualid
- Arctic fileclam
- Arctic glassy-mussel
- Arctic hiatella
- Arctic horny sponge
- Arctic krill
- Arctic lyre crab
- Arctic miniature-nutclam
- Arctic montacutid
- Arctic moonsnail
- Arctic paperbubble
- Arctic red prawn
- Arctic ringed seal
- Arctic roughmya
- Arctic sand star
- Arctic sea anemone
- Arctic sea gooseberry
- Arctic soft coral
- Arctic star
- Arctic surfclam
- Arctic thracia
- Arctic Waterflea
- Arctic wedgeclam
- Arctic whelk
- Arctic yoldia
- Arcturus jewel squid
- Arcuate keyhole limpet
- Arcuate mussel
- Arene
- Areolate mud crab
- Areolate rubble crab
- Areolated hairy crab
- Areolated horned shrimp
- Areolated xanthid crab
- Argentine red shrimp
- Argentine shortfin squid
- Argentine stiletto shrimp
- Argonaut
- Argus dovesnail
- Argus hermit
- Ark clam
- Arm squid
- Arm-banded ocellate octopus
- Armed aeolid
- Armed anemone
- Armed box crab
- Armed bristleworm
- Armed cranch squid
- Armed hermaphroditic anemone
- Armed hermit
- Armed nylon shrimp
- Armed rubble crab
- Armed snapping shrimp
- Armina
- Armina nudibranch
- Armlet carditid
- Armored stilt crab
- Armoured ball sponge
- Armoured lobster
- Armoured sea cucumber
- Armoured sea fan coral
- Armoured sea pen
- Armoured shrimp
- Armstrong's spider crab
- Arndt's horny sponge
- Arnold's stony coral
- Arnoux's beaked whale
- Arrow crab
- Arrow dwarf triton
- Arrow lucine
- Arrow papermussel
- Arrow shrimp
- Arrow worm
- Arrowhead crab
- Artichoke coral
- Articulate harp
- Articulate monodont
- Articulate vertagus
- Artuffel's cowry
- Aru mangrove snake
- Asaphis
- Ascidian pea crab
- Asellus cowrie
- Ashen sea cucumber
- Ashy horny sponge
- Ashy Sea Cucumber
- Asian brush crab
- Asian calanoid copepod
- Asian copepod
- Asian cumacean
- Asian cup-and-saucer
- Asian drill snail
- Asian flame volute
- Asian marsh snail
- Asian moon scallop
- Asian mussel
- Asian sea otter
- Asian semele
- Asian shore crab
- Asian small-clawed otter
- Asiatic cockle
- Asiatic hard clam
- Aspella
- Assiminea
- Astarte
- Asterina starfish
- Astraea snail
- Astreopora
- Asymmetric mud crab
- Athenarian burrowing anemone
- Atka membrane sponge
- Atlanta
- Atlantic Abra
- Atlantic Amphissa
- Atlantic ancula
- Atlantic assiminea
- Atlantic awningclam
- Atlantic banded octopus
- Atlantic beaded anemone
- Atlantic bearded seal
- Atlantic black coral
- Atlantic bobtail
- Atlantic bonnet
- Atlantic casmaria
- Atlantic Chimney Clam
- Atlantic cleftclam
- Atlantic cooperclam
- Atlantic corolla
- Atlantic cranch squid
- Atlantic cylinder sundial
- Atlantic deep lobster
- Atlantic deer cowrie
- Atlantic diplodon
- Atlantic Distorsio
- Atlantic ditch shrimp
- Atlantic falsejingle
- Atlantic fat-tellin
- Atlantic figsnail
- Atlantic firefly squid
- Atlantic galeommatid
- Atlantic gastrochaenid
- Atlantic gem-turris
- Atlantic geoduck
- Atlantic ghost crab
- Atlantic gonate squid
- Atlantic gray cowrie
- Atlantic gray seal
- Atlantic harbor seal
- Atlantic heart sea urchin
- Atlantic horseshoe crab
- Atlantic humpback dolphin
- Atlantic jewelbox
- Atlantic kittenpaw
- Atlantic lyre crab
- Atlantic marsh fiddler crab
- Atlantic mole crab
- Atlantic moon snail
- Atlantic morum
- Atlantic mud crab
- Atlantic mud shrimp
- Atlantic Mushroom Coral
- Atlantic nesta
- Atlantic nutclam
- Atlantic palolo worm
- Atlantic papermussel
- Atlantic partridge tun
- Atlantic pearl oyster shrimp
- Atlantic pearl-oyster
- Atlantic pen shrimp
- Atlantic petricolid
- Atlantic pincer lobster
- Atlantic psammonworm
- Atlantic puncturella
- Atlantic purple sea urchin
- Atlantic pygmy octopus
- Atlantic rangia
- Atlantic razor
- Atlantic razor clam
- Atlantic rock crab
- Atlantic rose chiton
- Atlantic ruby triton
- Atlantic Sand Fiddler Crab
- Atlantic sanguin
- Atlantic sea nettle
- Atlantic seabob
- Atlantic semele
- Atlantic sidegill slug
- Atlantic spinous spider crab
- Atlantic spotted dolphin
- Atlantic strawberry-cockle
- Atlantic thorny oyster
- Atlantic tree coral
- Atlantic triton's trumpet
- Atlantic umbrella slug
- Atlantic walrus
- Atlantic warty octopus
- Atlantic wentletrap
- Atlantic white-sided dolphin
- Atlantic wing-oyster
- Atlantic woodeater
- Atlantic yellow cowrie
- Atolla jellyfish
- Atom snail
- Atrate mussel
- Atromaculata leopard nudibranch
- Attenuate fileclam
- Attenuated cockle
- Attenuated datemussel
- Aubergine cowry
- Auburn eulima
- Auger cone
- Auger shell
- Aureate sponge
- Aurora anemone
- Austin's cone
- Austral golden crab
- Australasian barnacle
- Australia mud shrimp
- Australian abalone
- Australian bockadam
- Australian box jellyfish
- Australian fur seal
- Australian ghost shrimp
- Australian humpback dolphin
- Australian land hermit crab
- Australian mud oyster
- Australian Nodiwink
- Australian paste shrimp
- Australian pincer lobster
- Australian rose shrimp
- Australian sea lion
- Australian snubfin dolphin
- Australian spotted jellyfish
- Australian triton
- Australian trumpet shell
- Australian tubeworm
- Australogyra coral
- Ausubel's mighty clawed lobster
- Avalon trophon
- Avern's Glossodoris
- Aviu shrimp
- Awakened heart sea urchin
- Awl miniature cerith
- Awning Clam
- Axial paperbubble
- Axicornis murex
- Azine's dorid
- Azorean barnacle
- Azorean limpet
- Azure Vase Sponge
- Baba's Hypselodoris
- Baba's Phyllidia
- Babel's latiaxis
- Baby bubble
- Baby's toes
- Babylon pyram
- Babylon snail
- Babylonia turrid
- Babylonian auger
- Backwater hard clam
- Badge starfish
- Baer's Cone
- Baffin lamellaria
- Bag horsemussel
- Baggy pen shell
- Bahama Cone
- Bahaman Snapping Shrimp
- Bahamas scissurelle
- Bahamian slender chiton
- Bahia Brain Coral
- Baird's beaked whale
- Baja eulima
- Baja miniature nutclam
- Baked bean ascidian
- Baker bernardclam
- Baker paper-bubble
- Balboa Cardiomya
- Bald lamellaria
- Bald-patch urchin
- Bale's false dial
- Bali green stony coral
- Bali Shortcake
- Ball sponge
- Balloon jelly
- Balloon octopod
- Ballot's saucer scallop
- Bally shrimp
- Balmain bug
- Baltic gray seal
- Baltic isopod
- Baltic macoma
- Baltic prawn
- Baltic ringed seal
- Bamboo coral
- Bamboo worm
- Bamboo-shoot turris
- Banana coral
- Banana jellyfish
- Banana nudibranch
- Banana polycera
- Banana prawn
- Bandclaw hermit
- Banded arrow crab
- Banded bonnet
- Banded bootlace
- Banded brittle starfish
- Banded bryozoan
- Banded bubble star
- Banded carpet shell
- Banded clinging crab
- Banded coral shrimp
- Banded dovesnail
- Banded dye-murex
- Banded Engina
- Banded feather-duster worm
- Banded hingebeak
- Banded lobster
- Banded mangrove snake
- Banded marble cone
- Banded moon snail
- Banded ophiocoma
- Banded periwinkle
- Banded pheasant
- Banded phos
- Banded pisania
- Banded pitar
- Banded porcelain crab
- Banded ribbon worm
- Banded sea star
- Banded sea urchin
- Banded serpent star
- Banded snapping shrimp
- Banded spiny lobster
- Banded starfish
- Banded tegula
- Banded transennella
- Banded tube anemone
- Banded Tube-dwelling Anemone
- Banded tulip
- Banded tun
- Banded venus
- Banded vertagus
- Banded volute
- Banded whip lobster
- Banded-legged swimming crab
- Banded-spine urchin
- Banded-wedge shell
- Bandeye hermit
- Bandit coral crab
- Bank's murex
- Bantam hydrobe
- Bar-gilled mudworm
- Bar-toothed nereid
- Barbados keyhole limpet
- Barbados mathilda
- Barbados miter
- Barbed eualid
- Barbed nutclam
- Barclay's murex
- Bare-bellied tree coral
- Barents Sea sponge
- Bareye hermit
- Barlett's turrid
- Barnacle-eating onchidoris
- Baron mud lobster
- Baroque cave coral
- Barred grass shrimp
- Barrel jellyfish
- Barrel sea-pen
- Barrel snail
- Barrel sponge
- Barrel sponge porcelain crab
- Barrel-bubble
- Barren carrier-shell
- Barrett's horny sponge
- Barth's sea cucumber
- Barthelemy's cone
- Bartlett's blunt-tail prawn
- Bartlett's cuttlefish
- Bartlett's horny sponge
- Bartsch shipworm
- Bartsch's squid
- Basket ark
- Basket coral
- Basket mirachelus
- Basket nutmeg
- Basket rock sea cucumber
- Basket shell
- Basket star
- Basket star shrimp
- Basket whelk
- Bat snail
- Bat star
- Bat star worm
- Bat volute
- Bath sponge
- Bathyal stilt crab
- Bathyal swimming crab
- Batik sea slug
- Batwing coral crab
- Batwing slug
- Baumann's chromodorid
- Bavay's scallop
- Bay barnacle
- Bay ghost shrimp
- Bay nettle
- Bay scallop
- Bayer's thuridilla
- Beach ghost shrimp
- Beach mole crab
- Beachworm
- Beaded hairy crab
- Beaded mangelia
- Beaded miter
- Beaded mud crab
- Beaded necklace-shell
- Beaded periwinkle
- Beaded phos
- Beaded rock crab
- Beaded Sea Cucumber
- Beaded skenea
- Beaded sundial
- Beaded thala
- Beaded venus
- Beaded verticord
- Beadlet anemone
- Beaked cerith
- Beaked clam
- Beaked eualid
- Beaked fusus
- Beaked lucine
- Beaked sea cucumber
- Beaked sea snake
- Beaked sea urchin
- Beaked stony coral
- Beaked whale
- Bean coral
- Bean cowrie
- Bean Crenella
- Bean horse-mussel
- Bean malletia
- Bean razor clam
- Bean-like tellin
- Bear paw clam
- Bear-like hermit crab
- Beard worm
- Bearded crab
- Bearded horse mussel
- Bearded seal
- Bearded thorny oyster
- Beatic dwarf olive
- Beau's Cylinder Bubble
- Beau's murex
- Beau's vitrinella
- Beautiful bittersweet
- Beautiful Caecum
- Beautiful Clanculus
- Beautiful cleaner shrimp
- Beautiful cowrie
- Beautiful crassatella
- Beautiful Donax
- Beautiful dovesnail
- Beautiful formosa
- Beautiful fossarus
- Beautiful halgerda
- Beautiful Hypselodoris
- Beautiful miter
- Beautiful nutmeg
- Beautiful semele
- Beautiful tellin
- Beautiful topsnail
- Beautiful transparent shrimp
- Beautiful Triphora
- Beautiful truncatella
- Beautiful tusk
- Beautiful volute
- Beautifully-banded moon snail
- Beauty gibbula
- Beck's cowrie
- Bee spionid
- Beebe's fiddler crab
- Beebe's velvet shrimp
- Beech cone
- Beehive margarite
- Beetle brittle star
- Beggar aspella
- Behren's dorid
- Behring's whelk
- Beige horny sponge
- Beka squid
- Belanger's bullia
- Belcher's cupped oyster
- Belcher's Latirus
- Belcher's sea snake
- Belcher's venus
- Belcheri's Limops
- Belgica's hydroid
- Bell hydroid
- Bellator lobster
- Belleglade murex
- Belligerent rock shell
- Bellybutton nautilus
- Belt scissurelle
- Belted cone
- Belted horn
- Belted margin shell
- Belyaev's sea cucumber
- Benedict sand crab
- Bengal caridina
- Bengal cone
- Bengali geloina
- Benn's trapania
- Bennett's feather star
- Bennett's Hypselodoris
- Bennett's mud snake
- Bent mysid shrimp
- Bent sea cucumber
- Bent sea rod
- Bent-neck triton
- Bent-nose macoma
- Bent-nosed squat lobster
- Benth cerith
- Benthic comb jelly
- Berg-salmon gill worm
- Bergh's Aphelodoris
- Berghia nudibranch
- Bering Cardiomya
- Bering Henricia
- Bering hermit
- Bering roughmya
- Bering scallop
- Bering sea fan coral
- Berkeley eualid
- Bermuda bittersweet
- Bermuda cave amphipod
- Bermuda comb shrimp
- Bermuda cone
- Bermuda fireworm
- Bermuda keyhole limpet
- Bermuda lancelet
- Bermuda night shrimp
- Bermuda shrimp
- Bermuda sponge shrimp
- Bernard's venus
- Beroe
- Berried anemone
- Berry armhook squid
- Berry cone
- Berry dwarf-turban
- Berry whelk
- Berthella snail
- Bertsch's aeolid
- Bertsch's rainbow aeolid
- Beta rocksnail
- Betrothed calcareous sponge
- Beveled macoma
- Bewick's coral
- Bezoar rapana
- Bianca's cone
- Biangular prickly-winkle
- Bicolor gorgonian
- Bicolor pen shell
- Bicolor purse-oyster
- Bicolored Flatworm
- Biconic mangelia
- Biconic rock shell
- Bidentate sea cucumber
- Biform ghost shrimp
- Bifurcate mussel
- Big auger
- Big bottom bobtail squid
- Big horned flatworm
- Big red jellyfish
- Big whiplash squid
- Big white heart urchin
- Big-claw purple hermit crab
- Big-ear shipworm
- Big-eye amphipod
- Big-eyed bobtail squid
- Big-fin bobtail squid
- Big-leaf coral
- Big-mouth Vitrinella
- Bigclaw hippolyte
- Bigclaw snapping shrimp
- Bigelow mantis shrimp
- Bigelow's Zeidora
- Bigeye coastal shrimp
- Bigeye cranch squid
- Bigeye eulid
- Bigeye inshore squid
- Bigeye krill
- Bigfin reef squid
- Bigfin squid
- Bigfisted swimcrab
- Bigg's killer whale
- Bighand ghost shrimp
- Bighead octopus
- Bighead sand prawn
- Bighole clutch crab
- Bight lobster
- Bilaminar microporella
- Bilirate pandora
- Bill Clench's doris
- Bimarginate bathyal crab
- Bipartite Caecum
- Bipinnate sea plume
- Bird shrimp
- Bird squid
- Bird's head coralline
- Bird's nest coral crab
- Birdsnest Coral
- Biscay glass anemone
- Biscay sea fan coral
- Biscayne vitrinella
- Biscuit sea star
- Biscuit star
- Bisexual mussel
- Bittersweet clam
- Bituberculate rock shell
- Black abalone
- Black acoel
- Black and gold sap sucking slug
- Black and red encrusting bryozoan
- Black and silver cuapetes shrimp
- Black and white brittle star
- Black armed aeolid
- Black Atlantic planaxis
- Black ball sponge
- Black barnacle
- Black bittersweet
- Black boring worm
- Black brachiopod
- Black brittle star
- Black bush hydroid
- Black chiton
- Black clam
- Black Coral Barnacle
- Black coral crab
- Black cup coral
- Black Cyerce
- Black datemussel
- Black Dendrodoris
- Black dorid
- Black fan-shaped hydroid
- Black feather star
- Black Finger Crab
- Black flatworm
- Black foot ‘opihi
- Black hammer oyster
- Black head ribbon worm
- Black horseshoe worm
- Black katy chiton
- Black keyhole limpet
- Black leather sponge
- Black limpet
- Black lined periwinkle
- Black lipped cerith
- Black long-armed crab
- Black lug
- Black morph Cyphoma
- Black murex
- Black nassa
- Black nudibranch
- Black olive
- Black phyllidiella
- Black ribbon worm
- Black sack sponge
- Black Sea bottlenose dolphin
- Black Sea common dolphin
- Black Sea harbour porpoise
- Black sea hare
- Black Sea jellyfish
- Black sea nettle
- Black Sea Rod
- Black sea spider
- Black sea squirt
- Black sea turtle
- Black sponge shrimp
- Black Squat Lobster
- Black stink sponge
- Black sun coral
- Black synascidia
- Black Teatfish
- Black turban snail
- Black turrid
- Black urchin shrimp
- Black wire coral
- Black-and-white sea flea
- Black-and-yellow Cuthona
- Black-banded robust sea snake
- Black-banded sea snake
- Black-chained topshell
- Black-dot nudibranch
- Black-edged limpet
- Black-footed limpet
- Black-headed sea snake
- Black-line triphora
- Black-lipped pika
- Black-margined nudibranch
- Black-orange spud sponge
- Black-rib limpet
- Black-speckled polycera
- Black-spined murex
- Black-spined sea star
- Black-spot nassa
- Black-spot porostome
- Black-spotted Feather Duster
- Black-spotted topshell
- Black-spotted triton
- Black-striped hypselodoris
- Black-striped triton
- Black-tankard angaria
- Black-tipped spiny doris
- Black-tipped trifora
- Blackback barrel-bubble
- Blackback land crab
- Blackbar soldierfish isopod
- Blackberry crab
- Blackberry drupe
- Blackclaw crestleg crab
- Blackfinger rubble crab
- Blackish margarite
- Blacklip abalone
- Blackmouth moon snail
- Blackspotted bay shrimp
- Blackspotted Sea Cucumber
- Blacktail bay shrimp
- Bladder moon snail
- Bladderclam
- Blade-tipped tiara-urchin
- Bladed Box Fire Coral
- Bladed fire coral
- Bladed wentletrap
- Bladetooth elbow crab
- Blainville's beaked whale
- Blainville's murex
- Blainville's spiny rock-shell
- Blake lucine
- Blake's vitrinella
- Blanket octopus
- Blastomussa
- Bleeding Sponge
- Bleeding tooth
- Blind limpet
- Blind lobster
- Blind mole crab
- Blind pea crab
- Blister anemone
- Blister coral
- Blister glassy-bubble
- Blob-top jelly
- Blocked starfish
- Blood ark
- Blood brittle star
- Blood cockle
- Blood drop sea squirt
- Blood olive
- Blood Red Sea slug
- Blood star
- Blood-colored phyllodocid worm
- Blood-red encrusting bryozoan
- Blood-red hermit crab
- Blood-red tubeworm
- Blood-spot doris
- Blood-spot swimming crab
- Blood-spotted Glossodoris
- Blood-stained cone
- Blood-stained dovesnail
- Blood-stained frog shell
- Bloody Henry starfish
- Bloody hermit
- Bloody-belly comb jelly
- Bloody-red shrimp
- Blossom cone
- Blossom shrimp
- Blotched swimming crab
- Blotchy scallop
- Blue and orange tunicate
- Blue and red shrimp
- Blue bat star
- Blue beach hopper
- Blue bell sea squirt
- Blue bell tunicate
- Blue blubber jellyfish
- Blue boxer shrimp
- Blue button
- Blue Caribbean sponge
- Blue chalice
- Blue coral
- Blue crust coral
- Blue dorid
- Blue dorid nudibranch
- Blue Doriopsis
- Blue dragon nudibranch
- Blue encrusting sponge
- Blue eyed crab
- Blue green chiton
- Blue helmet jelly
- Blue jellyfish
- Blue king crab
- Blue knee hermit crab
- Blue land crab
- Blue linckia
- Blue mud shrimp
- Blue octocoral
- Blue periwinkle
- Blue purple goniopora
- Blue rice coral
- Blue sarmentosa
- Blue Sea Cucumber
- Blue shrimp
- Blue spiny lobster
- Blue spiny starfish
- Blue spot mantis shrimp
- Blue squat lobster
- Blue staghorn
- Blue stiliger
- Blue striped squat lobster
- Blue topsnail
- Blue tube worm
- Blue yellow ringed sea squirt
- Blue-back locust lobster
- Blue-black urchin
- Blue-eye whiplash squid
- Blue-eyed Coral Crab
- Blue-eyed hermit
- Blue-eyed rock crab
- Blue-green bryozoan
- Blue-leg swimcrab
- Blue-legged boxer shrimp
- Blue-legged hermit crab
- Blue-line chiton
- Blue-lined octopus
- Blue-lined philinopsis
- Blue-lipped sea krait
- Blue-orange banded hermit crab
- Blue-rayed limpet
- Blue-ring sea squirt
- Blue-speckled nudibranch
- Blue-spot chiton
- Blue-spot oxynoe
- Blue-spotted sea urchin
- Blue-striped Hermit Crab
- Blue-striped sea slug
- Blueband hermit
- Blueberry Hermit Crab
- Blueleg mantis shrimp
- Bluespine hermit
- Bluestriped light bulb tunicate
- Bluetip coral
- Bluff oyster
- Bluish encrusting sponge
- Bluish whelk
- Blunt arm sea star
- Blunt blade shrimp
- Blunt slipper lobster
- Blunt tellin
- Blunt-spined euryplacid crab
- Blunt-toothed crab
- Bluntclaw snapping shrimp
- Blunted cockle
- Blunted mitre
- Blunttooth swimcrab
- Blurred horny sponge
- Blushing star coral
- Boa worm
- Bob Marley sponge
- Bob Marley's intertidal spider
- Bobtail squid
- Bobtail trophon
- Bock's pectinated-worm
- Bock's pygmy octopus
- Bodega tellin
- Boero's spirastrellid
- Bohol nudibranch
- Bolland's Hypselodoris
- Bombay prawn
- Bombay sea snake
- Bonaire Banded Box Jelly
- Bone Caecum
- Bone-eating worm
- Bonelike mitre
- Bongo shrimp
- Bonnet limpets
- Bonsai bamboo coral
- Bonsai tree hydroid
- Boodlea sapsucker
- Boone hydrobe
- Boot sponge
- Bootlace worm
- Bopyrid isopod
- Bordered roboastra
- Borderless hydroid
- Boreal Astarte
- Boreal awningclam
- Boreal bathyark
- Boreal clubhook squid
- Boreal hairysnail
- Boreal horny sponge
- Boreal limpet
- Boreal marginella
- Boreal rosy margarite
- Boreal sundial
- Boreal topsnail
- Boreal veiled chiton
- Boreal wentletrap
- Boreoatlantic gonate squid
- Boreopacific gonate squid
- Boring petricola
- Boring pumpkin sponge
- Boring softshell
- Boring sponge
- Boring turretsnail
- Bornella
- Borniaclam
- Bory's moss worm
- Bosch's cone
- Boston facelina
- Botan shrimp
- Botryoid stickhydroid
- Bottle-brush black coral
- Bottlebrush Acropora
- Bottlebrush coral
- Bottlebrush Feather Star
- Bottlebrush hydroid
- Bottleneck Sea Cucumber
- Bottlenose whale
- Bottletail squid
- Bouchet's Chromodoris
- Bougainville's celleporella
- Boulder brain coral
- Boulder coral
- Boulder star coral
- Bousfield amphipod
- Boutet's cowrie
- Boutillier's black coral
- Bouvier's banded snapping shrimp
- Bove's mitre
- Bowerbank's Halichondria
- Bowers's gold tree coral
- Bowing entoproct
- Bowl coral
- Bowl limpet
- Bowl ringicula
- Box clam
- Box crab
- Box mussel
- Box scallop
- Boxer crab
- Boxer crab anemone
- Boxlike tellin
- Boyle's flapjack octopod
- Brack-water mussel
- Bracket coral
- Brackish grass shrimp
- Brackish hydroid
- Brackish river prawn
- Brackish water mussel
- Brackish-water corbula
- Brackish-water hydroid
- Braided anchor horny sponge
- Brain Root Coral
- Brain sponge
- Brain trumpet coral
- Branch Coral
- Branched antenna hydroid
- Branched cup coral
- Branched Finger Coral
- Branched sandpaper coral
- Branched tree coral
- Branching Anemone
- Branching ball-sponge
- Branching bryozoan
- Branching Candle Sponge
- Branching fire coral
- Branching flowerpot coral
- Branching sponge
- Branching staghorn coral
- Branching tube sponge
- Branching Vase Sponge
- Branham's cone
- Brazier's ear shell
- Brazil reef octopus
- Brazilian armina
- Brazilian comb venus
- Brazilian fiddler crab
- Brazilian mole crab
- Brazilian Rose Coral
- Brazilian slipper lobster
- Brazilian Starlet
- Brazilian volute
- Breadcrumb sponge
- Breast-shaped moon snail
- Brenner’s bobtail
- Brian Haye's Cone
- Briar cyclostreme
- Briareum
- Bridle rimula
- Brigham's coral
- Bright and thin razor clam
- Bright Chelidonura
- Bright red sponge
- Brilliant hermit
- Brilliant red carid
- Brilliant sea fingers
- Bristle snapping shrimp
- Bristle worm
- Bristled black-finger crab
- Bristled longbeak
- Bristled rubble crab
- Bristled sponge crab
- Bristly black coral
- Bristly case sponge
- Bristly crab
- Bristly fileclam
- Bristly horny sponge
- Bristly sea urchin
- Bristly tunicate
- Bristly vase sponge
- Bristly-tail scaleworm
- British Columbia crenella
- British Columbia Doto
- Brittle pen shell
- Brittlestar snail
- Broad chiton
- Broad circular crab
- Broad cockle
- Broad geloina
- Broad marginella
- Broad smoothcockle
- Broad velvet shrimp
- Broad yoldia
- Broad-clawed porcelain crab
- Broad-cord whelk
- Broad-fronted crab
- Broad-ribbed carditid
- Broadback cuttlefish
- Broadback mud crab
- Broadback sumo crab
- Broadback urn crab
- Broadclub cuttlefish
- Broadhand coral hermit
- Broccoli coral
- Brock's Moridilla nudibranch
- Brock's Pleurobranchus
- Brock's urchin shrimp
- Broderip's moon snail
- Brooch clam
- Brooding anemone
- Brooding smooth brittle star
- Brooding snake star
- Brooding spiny brittle star
- Brooding transparent tunicate
- Brooke's sea snake
- Broom hare
- Browed bathyal crab
- Brown ark
- Brown arrow worm
- Brown baby ear
- Brown Banded Hermit
- Brown banded moon jelly
- Brown barnacle
- Brown bear armhook squid
- Brown bowl sponge
- Brown box crab
- Brown brushy sea fan
- Brown bubble shell
- Brown burrowing aeolis
- Brown bushy bryozoan
- Brown comb jelly
- Brown cowry
- Brown cup coral
- Brown cup-and-saucer
- Brown curryfish
- Brown Cuthona
- Brown dendrodoris
- Brown encrusting anemone
- Brown Encrusting Octopus Sponge
- Brown encrusting sponge
- Brown eulima
- Brown falsejingle
- Brown fastpulse coral
- Brown featherstar shrimp
- Brown gemclam
- Brown gorgonian
- Brown grass shrimp
- Brown guard crab
- Brown janthina
- Brown jellyfish
- Brown land crab
- Brown mangrove mussel
- Brown meah sea star
- Brown mitre
- Brown moonsnail
- Brown mottled sea cucumber
- Brown mussel
- Brown Pacific turban
- Brown peanut worm
- Brown periwinkle
- Brown psolus
- Brown rangia
- Brown ribbon worm
- Brown ridged nudibranch
- Brown rock shrimp
- Brown rough shrimp
- Brown sandfish
- Brown sea anemone
- Brown sea cucumber
- Brown snapping shrimp
- Brown spindle
- Brown spiny doris
- Brown spiny lobster
- Brown spotted combstar
- Brown spotted sea cradle
- Brown squat lobster
- Brown tiger prawn
- Brown trapania
- Brown tube sponge
- Brown turban snail
- Brown Variable Sponge
- Brown venus
- Brown whelk
- Brown wonderworm
- Brown worm cucumber
- Brown-bamboo-shoot turris
- Brown-band dovesnail
- Brown-band wentletrap
- Brown-dotted nudibranch
- Brown-line eulima
- Brown-line latirus
- Brown-line niso
- Brown-line paperbubble
- Brown-lined volute
- Brown-lined whelk
- Brown-speckled Doris
- Brown-spotted cowry
- Brown-spotted halgerda
- Brown-spotted nudibranch
- Brown-streak stiliger
- Brown-striped octopus
- Brown-striped sand anemone
- Brown-tip mangelia
- Brown-varice eulima
- Brownbar snapping shrimp
- Brownspotted flatworm
- Bruce's hinge-beak shrimp
- Bruguiere's risso
- Bruised nassa
- Brush coral
- Brush horny sponge
- Brush nudibranch
- Brush-tip octopod
- Bruun's horny sponge
- Bryde's whale
- Bryer's nut crab
- Bryozoan
- Bryozoan shrimp
- Bubble conch
- Bubble cone
- Bubble coral
- Bubble coral shrimp
- Bubble dwarf olive
- Bubble gum coral
- Bubble melampus
- Bubble oscar sponge
- Bubble shell
- Bubble tip anemone
- Buckler spiny worm
- Buddhist crab
- Buffalo blunthorn lobster
- Bula Acropora coral
- Bulb shell
- Bulbose neptune
- Bulbous carnation coral
- Bulbous zoanthid
- Bulimoid pteropod
- Bull conch
- Bull hydroid crab
- Bullet cuttlefish
- Bullmouth helmet
- Bullock's Hypselodoris
- Bullroarer cyphoma
- Bullseye pistol shrimp
- Bullseye reef lobster
- Bully bobtail
- Bumblebee shrimp
- Bumblebee snail
- Bumping encrusting sponge
- Bumpy cyclocardia
- Bumpy limpet
- Bumpy sea cucumber
- Bumpy star coral
- Buoy barnacle
- Burger's fiddler crab
- Burgundy feather star
- Burkenroad blunt-tail shrimp
- Burmeister's porpoise
- Burn's hancockia
- Burn's ilbia
- Burn's phyllidiopsis
- Burned diplodon
- Burned nassa
- Burnett's murex
- Burnished cone
- Burnt murex
- Burnt-almond ark
- Burrow pea crab
- Burrow worm
- Burrow's chiton
- Burrowing anemone
- Burrowing Australian isopod
- Burrowing barnacle
- Burrowing brittle star
- Burrowing brown anemone
- Burrowing coral-shell
- Burrowing datemussel
- Burrowing sea cucumber
- Burrowing shaggy sea cucumber
- Burrowing urchin
- Burrunan dolphin
- Bush coral
- Bush-club squid
- Bushy acropora
- Bushy coral
- Bushy hard coral
- Bushy hydroid
- Bushy phyllodesmium
- Bushy sea whip
- Butler's thorny oyster
- Butter clam
- Buttercup lucine
- Butterfly bobtail
- Butterfly chiton
- Butterfly conch
- Butterfly crab
- Butterfly moon
- Butterfly venus
- Button coral
- Button crab
- Button isopod
- Button snail
- Button tunicate
- By-the-wind sailor
- Byron tivela
- Cabbage coral
- Cabbage jewel box
- Cabbage leather
- Cabbage murex
- Cabrillo porcelain crab
- Cachacrou boring sponge
- Cactus coral
- Cactus sea squirt
- Cactus sponge
- Cactus worm
- Caillet's stony coral
- Cake nassa
- Cake sand dollar
- Cake sponge
- Cake star
- Calanus
- Calcareous membranipora
- Calcareous sponge
- Calcareous tube-sponge
- Caledonian mitten lobster
- Calf moon snail
- Cali tort
- Calico box crab
- Calico clam
- Calico crab
- Calico scallop
- California admete
- California armhook squid
- California armina
- California assiminea
- California barnacle
- California Bay pea crab
- California bay shrimp
- California beach hopper
- California beanclam
- California black sea hare
- California blade barnacle
- California blue doris
- California boring horny sponge
- California burrowing anemone
- California burrowing crab
- California butterclam
- California caecum
- California capsnail
- California cerith
- California coastal shrimp
- California cone
- California coralsnail
- California cyclostreme
- California datemussel
- California diaphana
- California dimyid
- California dipperclam
- California drillia
- California erycina
- California eulima
- California false spindle
- California fat-tellin
- California flat doris
- California frogsnail
- California golden gorgonian
- California green shrimp
- California grippclam
- California heart urchin
- California hornsnail
- California horsemussel
- California hydrocoral
- California jackknife
- California king crab
- California lamp shell
- California lancelet
- California lilliput octopus
- California longbeak
- California lucine
- California lyonsia
- California macromphaline
- California mahogany-clam
- California marginella
- California melampus
- California mole crab
- California mussel
- California nassa
- California paperbubble
- California pedicularia
- California petricola
- California phoronid
- California rimula
- California sand star
- California sea cucumber
- California sea pork
- California sea squirt
- California seahare
- California seguenzia
- California semele
- California shellback crab
- California sidegill slug
- California skenea
- California softshell
- California spindle-bubble
- California spiny lobster
- California spiny star
- California stickhydroid
- California sun star
- California sunsetclam
- California surfclam
- California tagelus
- California toothshell
- California trivia
- California truncatella
- California two-spot octopus
- California venus
- California wentletrap
- California wormsnail
- California yoldia
- Californian box jelly
- Callused Bullia
- Caltrop murex
- Calycine long-armed squid
- Calypso flapjack octopod
- Camel cowrie
- Camel shrimp
- Cameroon ghost shrimp
- Camouflage anemone
- Camouflaged spider crab
- Camouflaged spiny sea cradle
- Camp pitar venus
- Campbell's conch
- Campechee pholad
- Canal monodont
- Canaries comb-finned squid
- Canary Island sea fan coral
- Cancellaria mitre
- Cancellate ark
- Cancellate Cantharus
- Cancellate cone
- Cancellate cyclostreme
- Cancellate fleshy limpet
- Cancellate glass-scallop
- Cancellate hairysnail
- Cancellate limops
- Cancellate Moonsnail
- Cancellate morum
- Cancellate mussel
- Cancellate nutmeg
- Cancellate panope
- Cancellate risso
- Cancellate semele
- Cancellate snakeskin-snail
- Cancellate vanikoro
- Cancellate wentletrap
- Cancellated clam
- Cancer Crab
- Cande diplodon
- Candé's Wentletrap
- Candelabra nudibranch
- Candelabrum trophon
- Candle sponge
- Candy cane coral
- Candy crab
- Candy striped flatworm
- Candy striped hermit crab
- Candy-striped shrimp
- Candystick tellin
- Candystripe hingebeak
- Cannonball jellyfish
- Cannonball sponge crab
- Cannonball sun star
- Canoe-bubble
- Canonical cone
- Cantharellus coral
- Cantor's narrow-headed sea snake
- Cantor's water snake
- Cap limpet
- Cape acorn worm
- Cape dogwhelk
- Cape dorid
- Cape false limpet
- Cape fur seal
- Cape jagged lobster
- Cape keyhole limpet
- Cape lobster
- Cape long-legged spider crab
- Cape mantis shrimp
- Cape mud shrimp
- Cape pearl-oyster
- Cape reef worm
- Cape rock lobster
- Cape Sea Urchin
- Cape slipper lobster
- Cape verde goose barnacle
- Cape Verde spiny lobster
- Cape zoanthid
- Capitellid thread worm
- Capitellid worm
- Capricorn octopus
- Capshell
- Captain cone
- Carabali shrimp
- Caramote prawn
- Cardinal cone
- Cardinal mitre
- Cardinal phyllidiopsis
- Cardinal prawn
- Cardita clams
- Caribbean ascidian shrimp
- Caribbean barleysnail
- Caribbean bivalved snail
- Caribbean carriersnail
- Caribbean cone
- Caribbean coralsnail
- Caribbean cosa
- Caribbean furry lobster
- Caribbean glass-sponge shrimp
- Caribbean glassy-bubble
- Caribbean hammer-oyster
- Caribbean hermit crab
- Caribbean horn coral
- Caribbean lobster
- Caribbean melampus
- Caribbean olive
- Caribbean pen shrimp
- Caribbean red chiton
- Caribbean reef octopus
- Caribbean reef squid
- Caribbean risso
- Caribbean rock mantis shrimp
- Caribbean sea star
- Caribbean sinezone
- Caribbean spiny lobster
- Caribbean sun anemone
- Caribbean surf clam
- Caribbean tegula
- Caribbean truncatella
- Caribbean two-spot octopus
- Caribbean vase
- Caribbean velvet shrimp
- Caribbean winged mactra
- Carinate alvania
- Carinate clutch crab
- Carinate dovesnail
- Carinate gadinia
- Carinate glass shrimp
- Carinate lacuna
- Carinate periwinkle
- Carinate rock shell
- Carinate shipworm
- Carinate snapping shrimp
- Carlson's Halgerda
- Carlsonhoff's Phyllidia
- Carmel horny sponge
- Carmel skenea
- Carmine marginella
- Carmine sea spray
- Carnation coral
- Carnelian cowrie
- Carnelian olive
- Carnivorous sponge
- Carol bobtail
- Carolina Aclis
- Carolina Caecum
- Carolina diamondback terrapin
- Carolina marshclam
- Carolina moonsnail
- Carolina sportella
- Carolina toothshell
- Caroline aviu shrimp
- Caroline's sea cucumber
- Carolinian ghost shrimp
- Carolinian octopus
- Carolinian olive shell
- Carpenter carditid
- Carpenter prawn
- Carpenter tellin
- Carpenter's falselimpet
- Carpenter's sea pen
- Carpenter's smooth nut clam
- Carpet anemone
- Carpet coral
- Carpet flatworm
- Carpet sea squirt
- Carpet sea star
- Carrier crab
- Carrier shell
- Carrot cone
- Carrot sponge
- Carrot squat lobster
- Cartrut whelk
- Carved Cardiomya
- Carved murex
- Carved starsnail
- Caspian mud shrimp
- Caspian seal
- Cat Aglaja
- Cat auger
- Cat cone
- Cat cowrie
- Cat eye
- Cat's Ear Cassidula
- Cat's ear otopleura
- Cat's eye shell
- Cat's paw
- Cat's paw scallop
- Cat's tongue oyster
- Cat's tongue tellin
- Cat's-foot star
- Catala's sea star
- Cataleptic lebbeid
- Catalina anemone
- Catalina forreria
- Catalina glass-scallop
- Catalina mantis
- Catalina turrid
- Catalonian striped shrimp
- Catch bowl coral
- Catesby's risso
- Catherine shrimp
- Catworm
- Cauliflower coral
- Cauliflower coral crab
- Cauliflower jellyfish
- Cave archiannelid
- Cave star coral
- Cayenne keyhole limpet
- Cayenne moon snail
- Cedros chromodorid
- Cedros seahare
- Celestial phyllidia
- Cellophane tube worm
- Cemented sandmason tubeworm
- Central American spinner dolphin
- Centurion cone
- Ceram vase
- Ceratosoma
- Cerberilla
- Cerith
- Cerulean sargassum shrimp
- Ceylon gymnodoris
- Ceylon pandora
- Ceylon phyllidiella
- Ceylon plocamopherus
- Chace pea crab
- Chace slipper lobster
- Chace's deep-sea shrimp
- Chacmol bat-wing sea slug
- Chadwick's feather star
- Chain dove-shell
- Chain tunicate
- Chain-link brittle star
- Chained moon-shell
- Chaldean cone
- Chalice coral
- Chalice sponge
- Chalktube worm
- Chalky buttercup lucine
- Chalky cucumber
- Chalky macoma
- Chalky pitar
- Chalky wentletrap
- Challenger cucumber
- Challenger gilded coral
- Challenger volute
- Chambered arrow worm
- Chamberlain's nembrotha
- Chameleon nerite
- Chameleon sea fan
- Champagne crab
- Champion's wentletrap
- Chan's dorid
- Changeable ark
- Changeable nassa
- Changos octopus
- Channel-clinging crab
- Channeled barrel-bubble
- Channeled dogwinkle
- Channeled duckclam
- Channeled dwarf auger
- Channeled nassa
- Channeled sea star
- Channeled solarelle
- Channeled sundial
- Channeled topsnail
- Channeled tun
- Channeled whelk
- Channelled sea cucumber
- Channelled turban
- Channelnose spider crab
- Characteristic cone
- Charcot's octopus
- Charcot's volute
- Charlotte macoma
- Charlotte nutclam
- Charming aeolid
- Charru mussel
- Charrua octopus
- Chautard's pen shell
- Cheating glycerid worm
- Cheating macoma
- Checkerboard bonnet
- Checkered cowry
- Checkered limpet
- Checkered nerite
- Checkered periwinkle
- Checkered pheasant
- Checkered unicorn
- Cheeky slippersnail
- Chelidonura
- Chemnitz cerith
- Chemnitz's ark
- Chemnitz's venus
- Chenu mussel
- Cherry jewelbox
- Cheryl crab
- Chestnut ancilla
- Chestnut astarte
- Chestnut cowrie
- Chestnut frogsnail
- Chestnut latirus
- Chestnut mussel
- Chestnut octopus
- Chestnut sea mouse
- Chestnut tonicia
- Chestnut turban
- Chestnut whelk
- Chevron amphiporus
- Chevron ribbon worm
- Chevron-tentacle anemone
- Chick-pea cowrie
- Chicken liver sponge
- Children's cowrie
- Chilean abalone
- Chilean anemone porcelain crab
- Chilean basket star
- Chilean bat star
- Chilean blue whale
- Chilean breadcrumb sponge
- Chilean crab
- Chilean dolphin
- Chilean giant barnacle
- Chilean jagged lobster
- Chilean kelp crab
- Chilean knife shrimp
- Chilean mole crab
- Chilean mud brittle star
- Chilean mussel
- Chilean nylon shrimp
- Chilean ribbed mussel
- Chilean sea pansy
- Chilean sea urchin
- Chilean semele
- Chilean shore crab
- Chilean stone crab
- Chilean triton
- Chili coral
- Chili pepper sponge
- Chiloe's hippoporina
- Chimney piddock
- Chimney sponge
- China clam
- China limpet
- China lobster
- China moon snail
- Chinese blood clam
- Chinese cabbage coral
- Chinese chromodoris
- Chinese cockle
- Chinese ditch prawn
- Chinese glauconome
- Chinese handcuffs
- Chinese hat shell
- Chinese jingle
- Chinese lettuce coral
- Chinese mitten crab
- Chinese mud lobster
- Chinese mud shrimp
- Chinese razor clam
- Chinese red pika
- Chinese sanguin
- Chinese scallop
- Chinese sea snake
- Chinese spiny lobster
- Chinese thorny oyster
- Chinese wedge clam
- Chink snail
- Chip crab
- Chiragra mantis shrimp
- Chiragra spider conch
- Chiton
- Chiton clam
- Chocolate brittle star
- Chocolate chip sea cucumber
- Chocolate chip sea star
- Chocolate porcelain crab
- Chocolate rock shell
- Chocolate-chip nudibranch
- Chocolate-line topsnail
- Choice margarite
- Chokka squid
- Choro mussel
- Christmas anemone
- Christmas tree coral
- Christmas tree hydroid
- Christmas tree worm
- Christmas-light brittle star
- Chromodoris
- Chrysalis mitre
- Chrysanthemum neodoris
- Chubby sun-star
- Chuchoca ark
- Chun's chiroteuthid squid
- Ciboney murex
- Cigar jellyfish
- Cigar pteropod
- Ciliated mantis shrimp
- Ciliated scale worm
- Cinderella starfish
- Cinnamon ancilla
- Cinnamon mussel
- Cipango prawn
- Circle axinopsid
- Circled rocksnail
- Circled shrimp
- Circular Chinese-hat
- Circular crab
- Circular false spider crab
- Circular saw shell
- Circular sea biscuit
- Circumcision cone
- Circumpolar eualid
- Citrine cowry
- Clam worm
- Clamkiller slipper lobster
- Clapper hydroid
- Clark's footless sea cucumber
- Clark's Melampus
- Clathrate drupe
- Clathrate trophon
- Clathrate venus
- Clathrus mitre
- Clavicle myoneria
- Clavus murex
- Clawed armhook squid
- Clawfooted marine isopod
- Clay Cone
- Clay Fiddler Crab
- Clean glassy-bubble
- Clean-slate glassy-bubble
- Cleaner shrimp
- Clear cleaner shrimp
- Clear sponge shrimp
- Clear sundial
- Clench's venus
- Clery's Cone
- Clicker
- Clinging jellyfish
- Clipped semele
- Cloak anemone
- Cloak scallop
- Closed brain coral
- Cloud sponge
- Clouded margin shell
- Clouded scallop
- Cloudy cowrie
- Cloudy keyhole limpet
- Cloudy periwinkle
- Clove polyp
- Clove puncturella
- Clown crab
- Clown nudibranch
- Club Caecum
- Club carnation coral
- Club finger
- Club finger coral
- Club hydroid
- Club pygmy octopus
- Club scallop
- Club-shaped boring clam
- Club-tipped Anemone
- Clubbed finger coral
- Clumpy nudibranch
- Clymene dolphin
- Co's goniobranchus
- Coarse dosina
- Coarse rimula
- Coarse shrimp
- Coarse wentletrap
- Coarsehand lady crab
- Coarsespined hairy crab
- Coastal arrow worm
- Coastal hermit crab
- Coastal mud prawn
- Coastal mud shrimp
- Coastal pantropical spotted dolphin
- Coastal spinyhead
- Cobalt blue horny sponge
- Cobbled starfish
- Cochimi's okenia
- Cock's comb conch
- Cock's comb oyster
- Cockerell's dorid
- Cockscomb cup coral
- Cockscomb hydrobe
- Coco worm
- Coconut octopus
- Cocoon dovesnail
- Coe's six-rayed star
- Coffee melampus
- Coffee mitre
- Coffeebean scaled squid
- Coffeebean trivia
- Cogger's sea snake
- Coiled wire coral
- Cold-water sea cucumber
- Coleman's Phyllodesmium
- Coleman's sea slug
- Coleman's shrimp
- Collar moon snail
- Collared sand anemone
- Collared sea snake
- Collector urchin
- Collingwood's Chromodoris
- Collonista snail
- Coloba cowrie
- Colombian longbeak shrimp
- Colonial anemone
- Colonial cup coral
- Colonial purple tunicate
- Colonial sea squirt
- Colonial sesquirt
- Colonial tube worm
- Colonial tunicate
- Colonial worm shell
- Colony sea squirt
- Colony tunicate
- Colored lagoon cockle
- Colorful aeolid
- Colorful Cuthona
- Colorful Dirona
- Colorful hermit crab
- Colorful moonsnail
- Colorful reef crab
- Colorful sea rod
- Colorful sea whip
- Colorful transennella
- Colossal false fusus
- Colossal melongena
- Coloured rock shrimp
- Colt coral
- Columbia black oyster
- Column auger
- Columniform crust coral
- Comb bathyark
- Comb bittersweet
- Comb pen shell
- Comb shrimp
- Comb star
- Comb-beak eualid
- Combclaw shrimp
- Combed octopus
- Comet starfish
- Comma necklace shell
- Commarginal bittersweet
- Commensal crinoid shrimp
- Commensal parchment worm crab
- Commensal pea crab
- Commensal sea urchin crab
- Commensal sponge shrimp
- Commercial scallop
- Commercial top
- Commerson's dolphin
- Common acorn barnacle
- Common Amathina
- Common antler sponge
- Common arm squid
- Common Atlantic marginella
- Common Atlantic sandhopper
- Common basket lucina
- Common basket star
- Common bobtail squid
- Common brachiopod
- Common brown tube sponge
- Common button top
- Common cap shell
- Common Caribbean Donax
- Common cerithe
- Common cheese puff sponge
- Common cuspidaria
- Common decorator crab
- Common delphinula
- Common Distorsio
- Common dogwhelk
- Common egg cowrie
- Common elephant's tusk
- Common encrusting soft coral
- Common European bittersweet
- Common feather star
- Common file shell
- Common fish leech
- Common fish louse
- Common Fjord starfish
- Common frog shell
- Common galatea clam
- Common geloina
- Common guard crab
- Common Gulf sandhopper
- Common hairy triton
- Common hemidonax
- Common intertidal limpet
- Common jingle
- Common jingle shell
- Common keyhole limpet
- Common lace hydrocoral
- Common light striated star
- Common long-spined urchin
- Common moon crab
- Common mud star
- Common Mushroom Coral
- Common northern comb jelly
- Common Northern European Opossum Shrimp
- Common nut clam
- Common nutmeg
- Common olive
- Common Pacific phos
- Common palmate sponge
- Common peanut worm
- Common piddock
- Common prickly winkle
- Common pythia
- Common salp
- Common sea daisy
- Common sea grape
- Common sessile barnacle
- Common silt crab
- Common slit-limpet
- Common soft coral
- Common squat lobster
- Common squillid mantis shrimp
- Common sundial
- Common Thyone
- Common Tooth Shell
- Common tortoiseshell limpet
- Common vertagus
- Common West-Indian Bubble
- Common western corbula
- Comox calcareous sponge
- Compact amphipod
- Compact ark
- Compact Astarte
- Compact bamboo coral
- Compact fossarus
- Compact ivory bush coral
- Compact sea spider
- Compact wormsnail
- Companion shrimp
- Compass jellyfish
- Compound sea squirt
- Compressed coral
- Compressed keyhole limpet
- Compressed lucine
- Compressed montacutid
- Compressed mysella
- Compressed toothshell
- Concave auger
- Concave baby's ear
- Concave gibbula
- Concave scallop
- Concave wentletrap
- Concealed chalice-bubble
- Concealed surf clam
- Concentric ervilia
- Concentric Nut Clam
- Conch pea crab
- Cone mitre
- Cone-shaped nassa
- Cone-shaped top
- Cone-tube worm
- Conelike dovesnail
- Confusing dwarf-venus
- Confusing fileclam
- Conic cup-and-saucer
- Conic horny sponge
- Conical crab
- Conical keyhole limpet
- Conical lamellaria
- Conical sea squirt
- Conical star coral
- Conoidal eulima
- Conrad's turbonille
- Consobrine tellin
- Consor top
- Consors' cockle
- Conspicuous chiton
- Conspicuous sea cucumber
- Constricted jellyfish
- Constricted macoma
- Constricted neptune
- Consuela's murex
- Contaminated cowrie
- Contorted stony coral
- Contour deep-sea shrimp
- Contracted Box Clam
- Contracted Corbula
- Contracted mitre
- Contracted rock shell
- Contracted semele
- Convex slippersnail
- Convoluted armina
- Convoluted barrel sponge
- Convoluted false triton
- Convoluted Orange Sponge
- Coodgee Elysia
- Cook Inlet beluga
- Cook's paliolla
- Cook's turban shell
- Cookie star
- Coonstriped shrimp
- Cooper yoldia
- Cooper's aeolid
- Cooper's Aldisa
- Cooper's Atlantic Caecum
- Cooper's chiton
- Cooper's nutmeg
- Cooraburra phyllidiella
- Copepod
- Copper sea mouse
- Coquina
- Coral anemone
- Coral barnacle
- Coral bryozoan
- Coral cerith
- Coral clinging crab
- Coral crab
- Coral Encrusting Sponge
- Coral four-lobed crab
- Coral gall crab
- Coral Hermit Crab
- Coral prawn
- Coral rock oyster
- Coral shrimp
- Coral snails
- Coral snapping shrimp
- Coral-eating aeolid
- Coral-eating mussel
- Coral-feeding snail
- Coralclam
- Coralliform catadysis
- Corallimorph decorator crab
- Coralline Brittle Star
- Coralline bryozoan
- Coralline-encased filament-worm
- Coralthicket hermit
- Coralworm
- Corbula sportella
- Corbula thracia
- Corded pitar
- Corded rocksnail
- Corded turrid
- Corded whelk
- Corded white limpet
- Cork sponge
- Corkscrew anemone
- Corkscrew glistenworm
- Corky sea finger
- Corneous ark
- Corneous wedge clam
- Cornucopic coral
- Coronado bonnet
- Coronado skenea
- Coronate moon turban
- Coronate nassa
- Coronate prickly-winkle
- Corrugate jewelbox
- Corrugate lucine
- Corrugate mussel
- Corrugate solecurtus
- Corrugated lace hydrocoral
- Corrugated liomera
- Corrugated triton
- Corrugated venus
- Corsican hare
- Cortez barrel shrimp
- Cortez oyster
- Coscinaraea coral
- Cosmic alvania
- Cosmopolitan Celleporella
- Costate button top
- Costate cockle
- Costate glass-scallop
- Costate hornsnail
- Costate keyhole limpet
- Costate lucine
- Costate nerite
- Costate tun
- Cotton's cuttlefish
- Couch rubble crab
- Courtesan sunset clam
- Courtly marginella
- Cowardly anemone
- Cowled nudibranch
- Cowrie
- Cox's turrid
- Crab anemone
- Crab barnacle
- Crab nemertean
- Crab-eating frog
- Crab-eating water snake
- Crabeater seal
- Craggy bathyal crab
- Cranch spider crab
- Crass turban
- Crater sea squirt
- Crater sponge
- Crawford nutmeg
- Crawford's Discodoris
- Crazed nudibranch
- Creeping ascidian
- Creeping bell hydroid
- Creeping bryozoan
- Creeping comb jelly
- Creeping orange hydroid
- Cremona's slug
- Crenate barnacle
- Crenate vitularia
- Crenellate disc-fin squid
- Crenulate Astarte
- Crenulate auger
- Crenulate mitre
- Crenulate nutclam
- Crenulate paperbubble
- Crenulate tellin
- Crescent octopus
- Crescent sea cucumber
- Crested limops
- Crested nembrotha
- Crested oyster
- Crested reef crab
- Crested turris
- Crevice crab
- Crevice sculling crab
- Crevice spider crab
- Cribrimorph bryozoan
- Crimped cirolanid
- Crimson coral shrimp
- Crimson jelly
- Crimson pasiphaeid
- Crinoid
- Crinoid snapping shrimp
- Crinoid worm
- Crisp pillow coral
- Crispate scissurelle
- Crispate venus
- Crispy crust coral
- Cristate pea crab
- Crocea clam
- Crocker's sea snake
- Crooked heart sea urchin
- Crooked pillar glass sponge
- Cross jellyfish
- Cross tellin
- Cross-barred venus
- Cross-fish
- Cross-hatched lucine
- Cross-sculpture Crenella
- Crossbanded grass shrimp
- Crown conch
- Crown cone
- Crown Doto
- Crown jellyfish
- Crown sea star
- Crown trophon
- Crowned baler
- Crowned cone
- Crowned coral crab
- Crowned cup coral
- Crowned Dendrodoris
- Crowned firefly squid
- Crowned hairysnail
- Crowned mitre
- Crowned nudibranch
- Crowned rock shell
- Crowned sea anemone
- Crowned sea urchin
- Crucifix crab
- Crude whelk
- Crumb-of-bread sponge
- Crumpled duster sponge
- Crumpled sponge
- Crust coral
- Crustal fire coral
- Crusty bryozoan
- Crusty nautilus
- Crusty red anemone
- Cryptic burrowing anemone
- Cryptic Coral
- Cryptic kelp crab
- Cryptic phyllodesmium
- Cryptic sea cradle
- Cryptic teardrop crab
- Cryptic white sponge
- Crystal jelly
- Crystal Miniature Cerith
- Crystal shrimp
- Crystal tellin
- Ctenella coral
- Cuba corbula
- Cuba dwarf pedipes
- Cuba frogsnail
- Cuba lucine
- Cuba transennella
- Cuban Reef Sponge
- Cuban vitrinella
- Cucullate rock oyster
- Cucumber sea anemone
- Cucumber volute
- Cultellus clam
- Cuming's cone
- Cuming's murex
- Cuming's worm shell
- Cuneate Donax
- Cuneate montacutid
- Cuneate tellin
- Cunjevoi
- Cup coral
- Cupola vitrinella
- Cupped shipworm
- Curly carrier shell
- Curly murex
- Curryfish
- Curtained jelly
- Curve-ribbed miter
- Curved datemussel
- Curved needle-pteropod
- Curvespine cuttlefish
- Cushion star
- Cusp shell
- Cuspidate Clio
- Cut Cyclocardia
- Cut-off cleftclam
- Cut-ribbed ark
- Cuvier's beaked whale
- Cuvier's cone
- Cyclope nassa
- Cylinder date mussel
- Cylindrical atys
- Cylindrical cone
- Cylindrical finger coral
- Cylindrical snapping shrimp
- Cylindrical spindle-bubble
- Cymbal bubble shell
- Cyphastrea
- Daddy-longlegs crab
- Daedalus' nudibranch
- Dagger Emarginula
- Daggerblade Grass Shrimp
- Dahlia anemone
- Daisy anemone
- Daisy brittle star
- Daisy snapping shrimp
- Dall blade shrimp
- Dall tuskshell
- Dall's chromodorid
- Dall's Dendronotus
- Dall's porpoise
- Dall's unicum top
- Dalmatian mane jelly
- Dalmatian sea slug
- Damon's volute
- Damselfish parasitic isopod
- Dana octopus
- Dana octopus squid
- Dana swimcrab
- Dana's blade shrimp
- Dana's chiroteuthid squid
- Dana's hermit crab
- Dana’s whiplash squid
- Dance volva
- Dancing Fiddler Crab
- Dandelion coral
- Danielle's thorunna
- Danielssen's zoanthid
- Daphne's chromodoris
- Dark blue soldier crab
- Dark cerith
- Dark diana conch
- Dark doto
- Dark drupe
- Dark dwarf-turban
- Dark mantis shrimp
- Dark pitar venus
- Dark shore crab
- Dark stinging sponge
- Dark unicorn
- Dark Volcano Sponge
- Dark-finger coral crab
- Dark-red sea-pen
- Dark-spot Cadlina
- Darkglove hermit
- Darkmargin batwing slug
- Dart squid
- Dartnose pear crab
- Date mussel
- Daum's reef lobster
- Davis's zoanthid
- Dawson's Kellyclam
- Day octopus
- De Man's snapping shrimp
- De serre’s pelican’s foot
- Dead man's fingers
- Dealer's cone
- Debelius reef lobster
- Decollate planaxis
- Decorated Chromodoris
- Decorated lucine
- Decorated marginella
- Decorated mitre
- Decorated reticulidia
- Decorator crab
- Decussate ark
- Decussate bittersweet
- Decussate bonnet
- Decussate risso
- Decussate turrid
- Decussate wormsnail
- Deep blade shrimp
- Deep jewelbox
- Deep lobe coral
- Deep sea squat lobster
- Deep softshell
- Deep trouble chalice-bubble
- Deep water hermit crab
- Deep water swimming crab
- Deep water venus
- Deep-cleft shipworm
- Deep-sea cherry blossom starfish
- Deep-sea cookie star
- Deep-sea mud shrimp
- Deep-sea red crab
- Deep-sea star coral
- Deep-water coral clam
- Deep-water horny sponge
- Deep-water mud lobster
- Deep-water mud shrimp
- Deep-water rose shrimp
- Deep-water sea fan
- Deep-water squat lobster
- Deep-webbed jewel squid
- Deeplet sea anemone
- Deepsea blind lobster
- Deepsea brittle star
- Deepsea eualid
- Deepsea kina
- Deepsea oyster
- Deepsea solitary salp
- Deepsea spinyhead
- Deepsea sun star
- Deepsea swimming crab
- Deepstaria
- Deepwater bigeye shrimp
- Deepwater branching coral
- Deepwater dovesnail
- Deepwater humpback shrimp
- Deepwater redfish (sea cucumber)
- Deepwater stony coral
- Deepwater tuatua
- Deer cowry
- Deer-antler crust
- Deer-horn murex
- Deichmann's Fiddler Crab
- Deichmann's Horny Sponge
- Del Valle's tiny shell
- Delessert's cone
- Delessert's false donax
- Delessert's lyria
- Delicate ark
- Delicate barnacle
- Delicate cellaria
- Delicate coral crab
- Delicate eggcockle
- Delicate Feather Star
- Delicate gamba prawn
- Delicate giant-turris
- Delicate glass-scallop
- Delicate heart sea urchin
- Delicate horny sponge
- Delicate hydroid
- Delicate ivory bush coral
- Delicate moonsnail
- Delicate needle conch
- Delicate scallop
- Delicate sea anemone
- Delicate sea pen
- Delicate sea whip
- Delicate six-rayed star
- Delicate spiny sea rod
- Delicate spoonclam
- Delicate staghorn bryozoan
- Delicate star
- Delicate stilt crab
- Delicate swimming crab
- Delicate tellin
- Delightful lacuna
- Delta macoma
- Delta prawn
- Deltoid rocksnail
- Demon shrimp
- Demon-faced crabs
- Demon-faced porter crab
- Dendritic placida
- Dendrodoris
- Dendronephtya crab
- Dendronotus
- Denison's dorid
- Dennison morum
- Dense bushy hydroid
- Dense carnation coral
- Dentate broadface crab
- Dentate flower coral
- Dentate limpet
- Dentate lucine
- Denticulate goodallia
- Denticulate rock oyster
- Denticulate rubble crab
- Depressed basilissa
- Depressed cowrie
- Depressed limpet
- Depressed rubble crab
- Depressed scale worm
- Depressed spider crab
- Depressed sunset clam
- Depressed topsnail
- Deraniyagala's beaked whale
- Derby hat bryozoan
- Dermatobranchus
- Derwent River sea star
- Desetang's mitre
- Desirable nudibranch
- Devaney's boxer shrimp
- Devil crab
- Devil's sea whip
- Devonshire cup coral
- Diadem cup coral
- Diadem pearl ovulid
- Diadem volute
- Diamond squid
- Diamondback tritonia
- Diana conch
- Diana's Chromodoris
- Diaphanous hydroid
- Diaphanous pelagic octopod
- DiCaprio's squat anemone shrimp
- Different yoldia
- Diffuse ivory bush coral
- Digger hermit
- Digitate acropora
- Digitate Pacific drupe
- Digitate thorny oyster
- Diguet's pygmy octopus
- Dilate piddock
- Diluvial ark
- Diluvian puncturella
- Dim rocksnail
- Dimidiate auger
- Diminutive cockle
- Diminutive purpura
- Dimorphic soft coral
- Dinner plate medusa
- Dinosaur nudibranch
- Diomede's sapsucker
- Diphos sanguin
- Dire whelk
- Dirona
- Dirt hiatella
- Dirty cowry
- Dirty harry
- Dirty mysella
- Dirty sea-squirt
- Dirty spiny sea cradle
- Disc anemone shrimp
- Disc-top tunicate
- Discodoris
- Discoid stony coral
- Discordant mussel
- Discors trough shell
- Discrepant venus
- Discus coral
- Disguised sea cucumber
- Dish surfclam
- Dishevelled sea-mouse
- Disk Dosinia
- Dispar ascidian
- Display Doto
- Distaff spindle
- Distant scallop
- Distantly-lineated cone
- Distinguished Fiddler Crab
- Distorsio
- Distorted eulima
- Distorted Mushroom Coral
- Distorted mussel
- Distorted thracia
- Diurnal horny sponge
- Divaricate gibbula
- Divaricate nutclam
- Divaricate short razor
- Divergent black coral
- Divergent lucine
- Divided Flatworm
- Divine ceratosoma
- Divine sea cucumber
- Djeddah snapping shrimp
- Djibouti cleaner shrimp
- Djibouti snapping shrimp
- Do-not-touch-me sponge
- Doc's aeolid
- Dock shrimp
- Doello Jurado's sponge
- Dog conch
- Dog shrimp
- Dog whelk
- Dog-faced water snake
- Dog-rose cowrie
- Dog's foot cockle
- Doghead triton
- Dohrn's abalone
- Doliolid
- Doll eualid
- Dollfu's Hypselodoris
- Dolphintooth nutclam
- Dome coral
- Domed elbow crab
- Domino shrimp
- Don Moore's murex
- Donald Duck shrimp
- Donax
- Donax-like tellin
- Donkey dung sea cucumber
- Donkey thorny oyster
- Donkey's ear abalone
- Doriopsilla
- Doris veiled shrimp
- Dorodotes shrimp
- Dorothy's Fiddler Crab
- Dosinia
- Dosinia lucine
- Dot-rib puncturella
- Doto
- Dotted bristle sea slug
- Dotted dove shell
- Dotted periwinkle
- Dotted snapping shrimp
- Double spiral worm
- Double-ear bobtail
- Double-edged keyhole limpet
- Double-forked plexaurella
- Double-lined horny sponge
- Double-lined sea slug
- Double-ringed flabellina
- Double-rowed sea urchin
- Double-snouted volva
- Double-star coral
- Doubletoothed hydroid
- Doubtful Cone
- Doughboy scallop
- Doughnut sea rod
- Dove shell
- Downy hermit crab
- Downy venus
- Dragon cowrie
- Dressed deep-sea shrimp
- Drifter crab
- Drillia
- Drop-covered cowry
- Droppings cowry
- Drummond's sea cucumber
- Dry sea feather
- Drygalski's sea urchin
- Du Petit's spindle
- Dubious dorid
- Dubious Finella
- Dubious sea cucumber
- Dubious volute
- Dubois' sea snake
- Ducal thorny oyster
- Duchassaing's colonial anemone
- Duck barnacle
- Duck's foot
- Duckbill tagelus
- Duerden's sun anemone
- Dujardin's slime sponge
- Dumeril's clam worm
- Dun sentinel
- Duncan coral
- Dunce cap limpet
- Dunker's Dosinia
- Duplex murex
- Duplicate auger
- Duplicate turret
- Durable venus
- Dusavel's cone
- Dushia Flabellina
- Dusky brown taringa
- Dusky dolphin
- Dusky hydroid
- Dusky macron
- Dusky nembrotha
- Dusky nerite
- Dusky sea snake
- Dusky stiliger
- Dusky tegula
- Dwarf ascidian
- Dwarf astarte
- Dwarf Atlantic planaxis
- Dwarf auger
- Dwarf baby ear
- Dwarf balloon aeolis
- Dwarf blind lobster
- Dwarf bobtail squid
- Dwarf cup coral
- Dwarf cushion star
- Dwarf cuttlefish
- Dwarf deepsea miter
- Dwarf fan shell
- Dwarf fileclam
- Dwarf gaza
- Dwarf glass-scallop
- Dwarf hairy mopalia
- Dwarf hairy triton
- Dwarf helmet
- Dwarf humpback shrimp
- Dwarf janthina
- Dwarf keyhole limpet
- Dwarf limpet
- Dwarf minke whale
- Dwarf olive
- Dwarf periwinkle
- Dwarf red ovula
- Dwarf red tip hermit crab
- Dwarf sea snake
- Dwarf shrimp
- Dwarf sperm whale
- Dwarf spinner dolphin
- Dwarf surfclam
- Dwarf swimming crab
- Dwarf teardrop crab
- Dwarf tiger lucine
- Dwarf triton
- Dwarf vertagus
- Dwarf warty pleurobranch
- Dwarf wentletrap
- Dwarf yellow tip hermit crab
- Dwarf zigzag scallop
- Dyed micro-cockle
- Dyson's keyhole limpet
- Ear-shaped philine
- Eared ark
- Eared barnacle
- Eared horse mussel
- Eared limops
- Eared stalked-jellyfish
- East African red mangrove crab
- East Asian finless porpoise
- East Pacific beach flea
- East Pacific land crab
- East Pacific red octopus
- Easter Island mitten lobster
- Easter Island slipper lobster
- Easter Island spiny lobster
- Eastern aligena
- Eastern auger
- Eastern beaded chiton
- Eastern emerald elysia
- Eastern Gulf sandhopper
- Eastern hanleya
- Eastern king prawn
- Eastern melampus
- Eastern mudsnail
- Eastern orange chiton
- Eastern oyster
- Eastern Pacific fighting conch
- Eastern saltmarsh mosquito
- Eastern school shrimp
- Eastern spinner dolphin
- Eastern surf chiton
- Eastern Tropical Pacific bottlenose dolphin
- Eastern tube crab
- Eastern turretsnail
- Eastern white slippersnail
- Ebony turrid
- Eccentric sand dollar
- Echinophyllia coral
- Echinopora coral
- Ecuador nutclam
- Ecuadorian hermit crab
- Eden's whale
- Edible sea urchin
- Edible shipworm
- Edward's hermit crab
- Edwards spider crab
- Eel pest
- Eelgrass false-limpet
- Eelgrass isopod
- Eelgrass polycera
- Eelgrass slug
- Egg cockle
- Egg cowrie
- Egg melampus
- Egg shell shrimp
- Egg whelk
- Eggshell urn crab
- Eggwhite moon snail
- Eglantine cowrie
- Egret-plumped mopalia
- Egyptian prawn
- Egyptian sea star
- Eight ray finger coral
- Eight-armed starfish
- Eight-rib emarginula
- Eight-strand jelly
- Eight-tentacle galeommatid
- Elbow crab
- Eleanor's calcareous sponge
- Electric blue hermit crab
- Electric flame scallop
- Elegance coral
- Elegant arrow worm
- Elegant basket lucina
- Elegant bobtail squid
- Elegant brittle star
- Elegant burrowing anemone
- Elegant bushclam
- Elegant coastal shrimp
- Elegant conch
- Elegant cuttlefish
- Elegant deep-sea shrimp
- Elegant dosinia
- Elegant dwarf cockle
- Elegant emarginula
- Elegant feather star
- Elegant fossarus
- Elegant frogsnail
- Elegant glassy-bubble
- Elegant jellyfish
- Elegant jewel squid
- Elegant margin shell
- Elegant nassa
- Elegant phyllidia
- Elegant purple sponge
- Elegant sea pen
- Elegant sea snake
- Elegant sea spider
- Elegant sea urchin
- Elegant squat lobster
- Elegant star-turris
- Elegant turrid
- Elegant venus
- Elena and Alexa's aeolid
- Elephant ear anemone
- Elephant ear coral
- Elephant ear sponge
- Elephant ear tunicate
- Elephant skin coral
- Elephant snail
- Elephant trunk snake
- Elephant trunkfish
- Elephant's snout volute
- Elephant's tusk shell
- Elephant's-foot moon snail
- Eleven-armed seastar
- Eliot's tambja
- Elisabeth's chromodoris
- Elkhorn coral
- Elkhorn coral crab
- Elkhorn Slough spionid
- Elliot's volute
- Elliptical astarte
- Elliptical calcareous sponge
- Elliptical mysella
- Elliptical sportella
- Elliptical star coral
- Elliptical trough shell
- Elongate aspella
- Elongate axinopsid
- Elongate carditid
- Elongate janthina
- Elongate jewel squid
- Elongate lamellaria
- Elongate macoma
- Elongate mactra
- Elongate mushroom coral
- Elongate nut clam
- Elongate saxicave
- Elongate solenogaster
- Elongate sunset clam
- Elongate toothshell
- Elongate whelk
- Elongate zoanthid
- Elongated mussel
- Elongated tunicate
- Elven abyss tunicate
- Elvis worm
- Elysia
- Emarginate dogwinkle
- Emarginate emarginula
- Emarginula
- Embossed venus
- Emerald crab
- Emerald leafslug
- Emerald nerite
- Emerald shrimp
- Emerald slug
- Emma's hypselodoris
- Emperor helmet
- Emperor shrimp
- Empress anteaeolidiella
- Empress venus
- Enchanting topsnail
- Encircled marginella
- Encrusted limpet
- Encrusting bolder coral
- Encrusting colonial anemone
- Encrusting coral
- Encrusting gorgonian
- Encrusting horny sponge
- Encrusting hydrocoral
- Encrusting orange sponge
- Encrusting pore coral
- Encrusting porites
- Encrusting sandpaper coral
- Encrusting sea squirt
- Encrusting sponge
- Encrusting star coral
- Encrusting turret sponge
- Encrusting yellow sponge
- Endeavour prawn
- Endemic predatory shrimp
- Endesa saucer coral
- Endive murex
- Enersis hydroid
- Engina
- Engraved barrel-bubble
- Engraved cone
- Engraved dovesnail
- Enigma oyster
- Enope squid
- Entangled moon-shell
- Enteromorpha-eating sapsucker
- Entodesma
- Epiphytic horny sponge
- Episcopal cone
- Episcopal miter
- Equal cleftclam
- Equal-sized surf clam
- Equilateral venus
- Erato
- Erdmann's zoanthid
- Erect puncturella
- Erect rope sponge
- Erect wormsnail
- Ernst's dorid
- Eroded clutch crab
- Eroded cowrie
- Eroded frog crab
- Eroded mud crab
- Eroded periwinkle
- Eroded turretsnail
- Eroded vase crab
- Ervilia
- Erycina
- Esteemed miter
- Estuarine baby-bubble
- Estuarine ghost shrimp
- Estuarine longeye shrimp
- Estuarine mussel
- Estuarine nereid
- Estuarine periwinkle
- Estuarine prawn
- Estuarine sea snake
- Estuarine snapping shrimp
- Estuary yoldia
- Ethiopian hare
- Eubranchus
- Eulima
- Eunice
- Eunicea
- Euphyllia
- Eurasian otter
- European common squid
- European date mussel
- European fan-worm
- European flask shell
- European flat oyster
- European flying squid
- European mud scud
- European prickly cockle
- European razor clam
- European spider crab
- European spiny lobster
- European spoon clam
- European squid
- European thorny oyster
- European wentletrap
- European wing oyster
- Eurysquillid mantis shrimp
- Eusocial shrimp
- Eveline's chromodorid
- Eveline's learchis
- Even-ribbed verticord
- Evermann's coral
- Evermann's star
- Exasperating jujubine
- Exasperating turris
- Excavated fileclam
- Excavated slipper shell
- Exceptional cone
- Expanded macoma
- Explorer rose shrimp
- Exquisite bubble
- Exquisite false-dial
- Exquisite sea pen
- Extraordinary sand star
- Extraordinary sea hare
- Eye of Judas purpura
- Eye spot hermit crab
- Eye-flash squid
- Eyed coral
- Eyed coral crab
- Eyed cowrie
- Eyeless shrimp
- Eyespot costasiella
- Eyespot rock shrimp
- Eyespot shrimp
- Ezo neptune
- Fabian's crevice anemone
- Facelina
- Facetted crab
- Faded tritonia
- Faeroe gary
- Faeroe sunset clam
- Fairy palm hydroid
- Falkland cellaria
- False angel wing
- False ark shell
- False arrow crab
- False bean clam
- False chalky sea cucumber
- False comb shrimp
- False cowrie
- False cup-and-saucer
- False dark mussel
- False doris
- False ear snail
- False earthworm
- False eyespot sea nettle
- False flower coral
- False golden cone
- False Greenland miter
- False grooved cowry
- False knob coral
- False lichen coral
- False limpet
- False melon volute
- False pillow coral
- False plexaura
- False plum anemone
- False porcelain crab
- False prickly winkle
- False pumpkin sponge
- False quahog
- False softshell
- False stomatella
- False three-banded cowry
- False tulip mussel
- False virgin cone
- False white prawn
- False white sea cucumber
- False zostera shrimp
- False-lined black coral
- Fan bryozoan
- Fan coral
- Fan mussel
- Fan round crab
- Fan shell
- Fan-shaped cockle
- Fancy chiton
- Fanel moonsnail
- Far Eastern mussel
- Farallon cyclostreme
- Fargo's mangelia
- Farrer's scallop
- Fast hermit
- Fat anemone
- Fat baby ear
- Fat dovesnail
- Fat gaper
- Fat Henricia
- Fat horsemussel
- Fat innkeeper worm
- Fat neptune
- Fat plough shell
- Fat tentacle torch coral
- Fat turbonille
- Fat vesicomya
- Fat Western nassa
- Fat whelk
- Fat-handed snapping shrimp
- Fatfinger marsh crab
- Fatlip Caecum
- Faulkner's coral
- Faurot's bonnet
- Faust tellin
- Favia
- Favites
- Favorinus
- Faxon Slipper Lobster
- Faxon's shrimp
- Feather black coral
- Feather boa isopod
- Feather boa sea pen
- Feather bryozoan
- Feather Coral
- Feather datemussel
- Feather duster worm
- Feather hydroid
- Feather Plume Hydroid
- Feather shrimp
- Feather star
- Feather star crab
- Feathered cone
- Feathered doto
- Feathered horny sponge
- Feathery black coral
- Feathery bryozoan
- Feathery sea pen
- Feathery shipworm
- Feeble shrimp
- Feisty Elvis Worm
- Feline doris
- Felippone's scallop
- Fellow's nudibranch
- Fenced ascidian
- Fenestrate dovesnail
- Fenestrate limpet
- Fenestrate mitre
- Fenestrate oyster-drill
- Fenestrate top
- Fenix lobster
- Fern bryozoan
- Fern hydroid
- Fernald brooding anemone
- Fernald's aeolid
- Ferreira's chromodorid
- Ferreira's spider crab
- Ferreous limpet
- Ferruginous sponge
- Fertile venus
- Festa's Fiddler Crab
- Festive lyria
- Festive murex
- Few-rib dwarf-turban
- Few-spot lirularia
- Fiber tube worm
- Fibre-optic hydroid
- Fibreglass cup sponge
- Fibrous horny sponge
- Fiddler shrimp
- Fierce king crab
- Fiery armhook squid
- Fifteen-scaled worm
- Fig cone
- Fig shell
- Fig sponge
- Fig whelk
- Fighting conch
- Fiji locust lobster
- Filamentous horse conch
- File clam
- File dogwinkle
- File fleshy limpet
- File limpet
- File paperbubble
- File Snake
- File yoldia
- Filigree hydroid
- Filigreed coral-worm
- Filose mangelia
- Filose turban
- Fimbriate auger
- Fimbriate false latiaxis
- Fimbriate shipworm
- Finch whelk
- Fine clam
- Fine Dosinia
- Fine feather-hydroid
- Fine shrimp
- Fine-cut alvania
- Fine-footed sea cucumber
- Fine-groove solarelle
- Fine-line Caecum
- Fine-line lucine
- Fine-lined hydrobe
- Fine-lined nutclam
- Fine-rib Cardiomya
- Fine-ribbed auger
- Fine-ribbed risso
- Fine-ribbed wentletrap
- Fine-ridged Tellen
- Fine-sculpted cerith
- Fine-sculpted frogsnail
- Fine-setose scaleworm
- Fine-spined sea snake
- Fine-spined urchin
- Fine-striped shrimp
- Finely-striate buccinum
- Finger Coral
- Finger mitre
- Finger plough shell
- Finger sponge
- Finger-lobed soft coral
- Finger-shaped sea-pen
- Fingered goblet sponge
- Fingernail moonsnail
- Fingerprint Cyphoma
- Fingerprint oyster
- Finless porpoise
- Finmark paperbubble
- Finned stilt crab
- Fiona (sea slug)
- Fire Coral
- Fire shrimp
- Fire Sponge
- Fire squid
- Fire urchin
- Fireband murex
- Firefly squid
- Fireworks anemone
- Fireworks hydroid
- Fireworks nudibranch
- Fireworm
- Fischer's risso
- Fischers' bathyal octopus
- Fish biter
- Fish doctors
- Fish hunting cone snail
- Fish isopod
- Fish leech
- Fish louse
- Fish-eating star
- Fish-eating urticina
- Fish-hook water flea
- Fishbone hydroid
- Fisher's myxasterid
- Fisher's toothed Henricia
- Fisherman's nutmeg
- Fishing bat
- Fitch piddock
- Fitzroy's dolphin
- Five lined ribbon worm
- Five-armed ophiactis
- Five-armed seastar
- Five-toothed Sea Cucumber
- Fivespine purse crab
- Fivespined squillid mantis shrimp
- Fjord barnacle
- Fjord sand encrusting anemone
- Fjord sapling
- Flabby bristle-worm
- Flabby sponge
- Flabellina
- Flag pen shell
- Flagellate False Plexaura
- Flagnose bay shrimp
- Flamboyant cuttlefish
- Flame auger
- Flame box crab
- Flame Coloured Cone
- Flame cone
- Flame dovesnail
- Flame helmet
- Flame jellyfish
- Flame scallop
- Flame-patterned burnupena
- Flame-silhouetted calcareous sponge
- Flameback
- Flameback coral shrimp
- Flamed astarte
- Flamed moon snail
- Flaming reef lobster
- Flamingo cone
- Flamingo shrimp
- Flamingo tongue snail
- Flap-tip piddock
- Flapjack octopus
- Flapping dingbat
- Flash
- Flask shell
- Flat abalone
- Flat cardiapod
- Flat coral
- Flat crab
- Flat cup coral
- Flat diplodon
- Flat dorid
- Flat elbow crab
- Flat Elysia
- Flat hoofsnail
- Flat leaf sponge
- Flat lettuce coral
- Flat lobe coral
- Flat macoma
- Flat mysella
- Flat okenia
- Flat periwinkle
- Flat porcelain crab
- Flat rock crab
- Flat skenea
- Flat spider crab
- Flat spoonclam
- Flat surfclam
- Flat tellin
- Flat thouarella
- Flat tivela
- Flat topshell
- Flat tree-oyster
- Flat urchin
- Flat wormsnail
- Flat-tail Sea Snake
- Flatback blind lobster
- Flatback mud crab
- Flatback sea turtle
- Flatface swimming crab
- Flathead snapping shrimp
- Flatnose shrimp
- Flatribbed scallop
- Flatspine brittlestar
- Flatspine triangle crab
- Flatspired nerite
- Flattened bryozoan
- Flattened carditid
- Flattened crab
- Flattened harlequin cowry
- Flattened helmet comb jelly
- Flattened sea fan coral
- Flattened sea urchin
- Flattened shrimp
- Flattened toothshell
- Flattop crab
- Flea-bitten cone
- Flecked box crab
- Flecked miter
- Flecked squareback crab
- Fleeting purse crab
- Fleming’s urchin
- Flesh sponge
- Fleshy artichoke coral
- Fleshy Donax
- Fleshy Doriopsilla
- Fleshy horny sponge
- Fleshy keyhole limpet
- Fleshy prawn
- Fleshy star coral
- Fleshy tellin
- Flexed verticord
- Flexuose cleftclam
- Flexuous scallop
- Floreana Coral
- Flores Island Squid
- Florida Caecum
- Florida cone
- Florida corallimorpharian
- Florida decorator crab
- Florida dovesnail
- Florida east coast diamondback terrapin
- Florida grass shrimp
- Florida grassflat crab
- Florida lady crab
- Florida lancelet
- Florida lobsterette
- Florida lucine
- Florida lyonsia
- Florida macromphaline
- Florida manatee
- Florida marshclam
- Florida melampus
- Florida miter
- Florida natica
- Florida onchidella
- Florida pricklycockle
- Florida regal doris
- Florida rocksnail
- Florida scissurelle
- Florida sea cucumber
- Florida shipworm
- Florida slender chiton
- Florida spiny jewelbox
- Florida tivela
- Florida vitrinella
- Florida worm shell
- Florida wormsnail
- Flotsam crab
- Flounder fish louse
- Flower coral
- Flower ghost shrimp
- Flower hat jelly
- Flower hydroid
- Flower moon crab
- Flower pot coral
- Flower pot true red coral
- Flower sand crab
- Flower shrimp
- Flower urchin
- Flower-head polyp
- Flowering thorunna
- Flowerpot coral
- Flowervase jewel squid
- Flowery carnation coral
- Fluffy nudibranch
- Flustriform micropore
- Fluted bryozoan
- Fluted giant clam
- Fly spotted auger
- Fly swatter brittle star
- Fly-speck moonsnail
- Flying spaghetti monster
- Flying squid
- Flying swimming crab
- Flyspeck cerith
- Folded trophon
- Foliaceous shipworm
- Foliate kelp crab
- Foliate oyster
- Foliated tellin
- Foliose coral
- Foolish mussel
- Football Jersey worm
- Football octopod
- Football sea squirt
- Forbes sea star
- Forceps shrimp
- Forceps snapping shrimp
- Forceps spindle
- Ford venus
- Forest sickle crab longlegs
- Forked spinyhead
- Forked venus
- Forked-tentacle corallimorpharian
- Forknose king crab
- Formosa lobster
- Formosan babylon
- Formosan gorgonian
- Formosan miter
- Forskal's pleurobranch
- Forsskal's whelk
- Fortunate Dermatobranchus
- Fossi's encrusting anemone
- Fossor coquina
- Fouling bryozoan
- Fouling isopod
- Fouling serpulid
- Fountain anemone
- Four spotted coffee-bean
- Four tentacled jelly
- Four-colour nudibranch
- Four-eyed dorvillea
- Four-eyed nemertean
- Four-handed box jellyfish
- Four-horned spider crab
- Four-keeled margarite
- Four-lobed porcelain crab
- Four-lobed swimming crab
- Four-rib lucine
- Four-spined needle shrimp
- Four-spines nutshell shrimp
- Four-thread cerith
- Four-tooth tubeworm
- Fourhorn crab
- Fourhorn octopus
- Fourline nudibranch
- Fourpad octopus
- Fourslit toothshell
- Fourspot trivia
- Fourtooth toothshell
- Fox coral
- Fragile barleysnail
- Fragile barnacle
- Fragile calcareous sponge
- Fragile cockle
- Fragile crenella
- Fragile discodoris
- Fragile geography cone
- Fragile ghost shrimp
- Fragile moonsnail
- Fragile mushroom coral
- Fragile paperbubble
- Fragile piddock
- Fragile rainbow star
- Fragile ruffled scaleworm
- Fragile saucer coral
- Fragile sea urchin
- Fragile sea whip
- Fragile semele
- Fragile spoonclam
- Fragile star
- Fragile sticky ray star
- Fragile surfclam
- Fragile tellin
- Fragile tube worm
- Fragile whelk
- Frail sea pen
- Franciscan coastal shrimp
- Franciscana
- Francolina jopas
- Fraser's dolphin
- Fraussen's cone
- Freckled ancula
- Free-living sphenia
- Friable sea urchin
- Friant's sea star
- Fried egg jellyfish
- Fried egg sea slug
- Friendly blade shrimp
- Frigid cone
- Frigid yoldia
- Frill-wing murex
- Frilled dogwinkle
- Frilled nudibranch
- Frilled papercockle
- Frilled pygmy octopus
- Frilled venus
- Frilled venus shell
- Frilled whelk
- Frilly dwarf triton
- Frilly typhis
- Fringed bonnet
- Fringed cowry
- Fringed false limpet
- Fringed pearl oyster
- Fringed sand star
- Fringed vitrinella
- Fringed-hood spaghetti-worm
- Fringy arm wrestler crab
- Frog crab
- Frog cuttlefish
- Frog shell
- Frog-face coral
- Frogspawn coral
- Fromia sea star
- Frond aeolis
- Frond oyster
- Front topped limpet
- Frost-spot corambe
- Frosted wentletrap
- Frozen island shrimp
- Fuchsia flatworm
- Fuchsia lace hydrocoral
- Full-flowered sea pen
- Fungiid wentletrap
- Fungus coral
- Funnel auger
- Furbellowed watering pot
- Furcate spider crab
- Furred sponge crab
- Furrow shipworm
- Furrowed frog crab
- Furrowed horny sponge
- Furrowed horse mussel
- Furrowed mud crab
- Furrowed nutclam
- Furrowed paperbubble
- Furrowed pupa
- Furrowed rock crab
- Furrowed sea cradle
- Furrowed venus
- Furrowless fileclam
- Furry bryozoan
- Furry crab
- Furry hermit
- Furry lobster
- Furry sea cucumber
- Furtive thorunna
- Fused ivory tree coral
- Fused staghorn coral
- Fusiform cerithiopsis
- Fusiform colus
- Fusiform whelk
- Fuzzy crab
- Fuzzy hermit
- Fuzzy hooded shrimp
- Fuzzy mud crab
- Fuzzy onchidoris
- Fuzzy star
- Fuzzy table coral
- Gabb's vitrinella
- Gabriela's tambja
- Gaertner's spoon worm
- Gaimard's hermit crab
- Galapagos coral
- Galápagos dandelion
- Galápagos fiddler crab
- Galápagos fur seal
- Galápagos octopus
- Galápagos sea lion
- Galápagos slipper lobster
- Galápagos snapping shrimp
- Galaxy coral
- Gale and Alex's chromodorid
- Gamba prawn
- Gambia ark
- Gangranous cowrie
- Gaper pea crab
- Gaping cockle
- Gaping file shell
- Garcia's cone
- Gardiner's banana nudibranch
- Gardiner's coral
- Gardiner's doridomorpha
- Gardiner's headshield slug
- Gardiner's notodoris
- Garland hydroid
- Garlic sponge
- Garnet crab
- Garter whelk
- Gas mantle ascidian
- Gasflame nudibranch
- Gaskoin's cowry
- Gates' goblet
- Gaudy asaphis
- Gaudy black coral
- Gaudy cantharus
- Gaudy chromodorid
- Gaudy clown crab
- Gaudy frogsnail
- Gaudy nassa
- Gauntlet vase
- Gay's little venus
- Gazami crab
- Gelatinous blanket octopus
- Gelatinous bryozoan
- Gelatinous scale worm
- Gem anemone
- Gem cyclostreme
- Gem miter
- Gem murex
- Gem tegula
- Gem topsnail
- General cone
- Gentle sea cucumber
- Geographic sea hare
- Geography cone
- Geometric chromodoris
- Geometric star
- Georgia Basin horny sponge
- Georgian sea cucumber
- Gerard's water snake
- Gervais' beaked whale
- Ghiselin's chromodorid
- Ghost comb shrimp
- Ghost coral
- Ghost jellyfish
- Ghost murex
- Ghost octopus
- Giant ‘opihi
- Giant abalone
- Giant african cuttlefish
- Giant Antarctic isopod
- Giant Antarctic octopus
- Giant aspidostoma
- Giant Atlantic cockle
- Giant Atlantic pyram
- Giant barnacle
- Giant barrel sponge
- Giant basket star
- Giant beaked whale
- Giant bittersweet
- Giant box crab
- Giant brooding anemone
- Giant brown pseudarchaster
- Giant burrowing anemone
- Giant California sea cucumber
- Giant canoe-bubble
- Giant Caribbean anemone
- Giant chiton
- Giant chorus snail
- Giant ciliate ethusa
- Giant clam commensal shrimp
- Giant cleftclam
- Giant crenella
- Giant cuttlefish
- Giant datemussel
- Giant Eastern murex
- Giant Eastern Pacific conch
- Giant egg crab
- Giant eggcockle
- Giant false donax
- Giant false limpet
- Giant false-tun
- Giant fanworm
- Giant feather duster
- Giant feather-duster worm
- Giant file shell
- Giant fire salp
- Giant flatworm
- Giant fleshy scaleworm
- Giant frog shell
- Giant frond-aeolis
- Giant ghost shrimp
- Giant green anemone
- Giant hairy melongena
- Giant harpiosquillid mantis shrimp
- Giant heart urchin
- Giant keyhole limpet
- Giant keyhole sand dollar
- Giant knobbed cerith
- Giant land crab
- Giant lions-paw
- Giant longbeak shrimp
- Giant mangrove snapping shrimp
- Giant margarite
- Giant melon whelk
- Giant Mexican limpet
- Giant montacutid
- Giant morum
- Giant orange sea cucumber
- Giant orange tochui
- Giant Pacific sea scallop
- Giant pandora
- Giant periwinkle
- Giant phantom jelly
- Giant piling worm
- Giant pill bug
- Giant pink sea star
- Giant plumed anemone
- Giant red hermit crab
- Giant red mysid
- Giant red necklace-worm
- Giant red shrimp
- Giant rock-scallop
- Giant salp
- Giant scale worm
- Giant sea spider
- Giant siphonophore
- Giant slimy star
- Giant slit-pore sea rod
- Giant spearing mantis shrimp
- Giant spider conch
- Giant sponge
- Giant star
- Giant star coral
- Giant sulcate venus shell
- Giant sundial
- Giant swimcrab
- Giant triton
- Giant tugali limpet
- Giant tun
- Giant tunicate
- Giant variable thorny oyster
- Giant whip coral
- Giant white clam
- Giant worm shell
- Giant-clam shrimp
- Giard's sabellarid worm
- Gibb's sea spider
- Gibbon furrow lobster
- Gibbose cavoline
- Gibbose conch
- Gibbose latirus
- Gibbous nassa
- Gibbous rock crab
- Gilchrist's firefly squid
- Gilchrist's volute
- Gilded tegula
- Gilded wedgeclam
- Ginger shrimp
- Ginkgo-toothed beaked whale
- Giraffe spot nudibranch
- Girdle anemone
- Girdled dogwhelk
- Girdled Glossodoris
- Girdled horn shell
- Girdled lirularia
- Girdled margin shell
- Girdled paperbubble
- Girdled trophon
- Girgyllus star shell
- Glabrous broadface crab
- Glabrous fan lobster
- Glacial bathyark
- Glacial dipperclam
- Glacial pandora
- Glacial squid
- Glacial whelk
- Glacial zoanthid
- Glacier-loving soft coral
- Gladiator box crab
- Gladiator lobsterette
- Gladiator prawn
- Gladiator striped shrimp
- Gladiator swimcrab
- Gladiator swimming crab
- Gland dorid
- Glandular Crenella
- Glandular dorid
- Glans nassa
- Glass anemone shrimp
- Glass octopus
- Glass scallop
- Glass shrimp
- Glass sponge
- Glass sponge shrimp
- Glass squid
- Glass worm
- Glass-haired chiton
- Glassy flying squid
- Glassy lyonsia
- Glassy mactra
- Glassy nut clam
- Glassy plume hydroid
- Glassy rissoa
- Glassy snail
- Glassy tube worm
- Glassy tunicate
- Glassy wing-oyster
- Glaucous cone
- Glaucous pimplet
- Glaucous whiplash squid
- Glenie's Chromodoris
- Glisten-worm solenogaster
- Glistening abalone
- Glistenworm
- Globe octopus
- Globelet ophiomitrella
- Globoid calcareous sponge
- Globose ark
- Globose coralsnail
- Globose kelp crab
- Globose king crab
- Globose nassa
- Globose octopus
- Globose sand crab
- Globose shore crab
- Globose violet snail
- Globose whelk
- Globular ascidian
- Globular cowrie
- Globular ghost crab
- Globular helmet shell
- Globular mud snail
- Globular Murex
- Globular sea urchin
- Gloomy nudibranch
- Gloomy octopus
- Glorious drillia
- Glorious topsnail
- Glory of the sea
- Glory-of-india cone
- Glory-of-the-Atlantic cone
- Glory-of-the-seas venus
- Glossodoris
- Glossy dovesnail
- Glossy Hermit Crab
- Glossy odostomia
- Glove horny sponge
- Glove sponge
- Glycerine worm
- Gmelin's top shell
- Gnathiid isopod
- Gnome's hat hydroid
- Goat's eye limpet
- Goblet stalked-jellyfish
- Goblet worm
- Goblin prawn
- Goddard's aeolid
- Goddard's trapania
- Gold coral
- Gold flowing bittersweet
- Gold lace nudibranch
- Gold ring cowrie
- Gold-banded volute
- Gold-dotted Chelidonura
- Gold-flecked chiton
- Gold-line Cyphoma
- Gold-line marginella
- Gold-mouth mitre
- Gold-mouth sea squirt
- Gold-spot octopus
- Gold-spotted Chromodoris
- Gold-spotted hermit crab
- Gold-stripe eulima
- Gold-striped melanella
- Gold-tipped trapania
- Goldcrowned Sea Goddess
- Golden acorn worm
- Golden anemone
- Golden bobtail squid
- Golden carpet shell
- Golden Cone
- Golden cowrie
- Golden crab
- Golden cuttlefish
- Golden decorator crab
- Golden deepsea crab
- Golden Dirona
- Golden dovesnail
- Golden fireworm
- Golden ghost crab
- Golden jellyfish
- Golden king crab
- Golden limpet
- Golden mantis shrimp
- Golden moon snail
- Golden noumea
- Golden oyster
- Golden phoronid
- Golden sandfish
- Golden sea fan
- Golden shrimp
- Golden star tunicate
- Golden thorny oyster
- Golden trumpet worm
- Golden volute
- Golden war coral
- Golden zoanthid
- Golden-hairy hermit crab
- Goldmouth murex
- Goldmouth turban
- Golf ball coral
- Golf ball sponge
- Golf tee medusa
- Golfo Dulce yellow sea snake
- Gondwana shrimp
- Gondwana striped shrimp
- Good luck flatworm
- Goose bump sponge
- Goose foot starfish
- Gooseberry worm
- Gordon nutclam
- Gore pea crab
- Goree razor clam
- Goree slipper shell
- Gorgeous horny sponge
- Gorgeous tuskshell
- Gorgonian
- Gorgonian crab
- Gorgonian fan
- Gorgonian pandalid shrimp
- Gorgonian sea fan coral
- Gorgonian shrimp
- Gorgonian wrapper
- Gorgonian-feeding anemone
- Gorilla crab
- Gosliner's trapania
- Gossamer worm
- Gould beanclam
- Gould chalice-bubble
- Gould Cyclocardia
- Gould’s auger
- Gould's baby chiton
- Gould's bubble snail
- Gould's flying squid
- Gould's northern turrid
- Gould's pandora
- Gould's razor clam
- Gould's sipunculid
- Gourmya cerith
- Grace's horny sponge
- Graceful aeolid
- Graceful auger
- Graceful black coral
- Graceful blunt-tail prawn
- Graceful cowry
- Graceful cyclostreme
- Graceful decorator crab
- Graceful dovesnail
- Graceful fig shell
- Graceful kelp crab
- Graceful lepton
- Graceful rock crab
- Graceful rocksnail
- Graceful small-headed sea snake
- Graceful spindle
- Gracile Donax
- Gracile hydroid
- Graduated sea fan coral
- Graeffe's turris
- Graham's Sheet Coral
- Grain barrel-bubble
- Grain string coral
- Grained seastar
- Grainy plectodon
- Grainyhand hermit crab
- Grammatus whelk
- Grand awningclam
- Grand macoma
- Grand razor shell
- Grand toothshell
- Grand triopha
- Granger’s Cone
- Granite limpet
- Granular drupe
- Granular frogsnail
- Granular lamellaria
- Granular limpet
- Granular marine isopod
- Granular mitre
- Granular poromya
- Granular prickly-winkle
- Granular sea star
- Granular top-shell
- Granulate lyonsia
- Granulate puncturella
- Granulate shellback crab
- Granulated conch
- Granulated cowry
- Granulated crab
- Granulated dogwhelk
- Granulated mask crab
- Granulated mushroom coral
- Granulated nassa
- Granulated Spider Crab
- Granulose chondriovelum
- Granulose cleftclam
- Granulose mud crab
- Granulose purse crab
- Granulose topsnail
- Grape cowrie
- Grape morula
- Grape shrimp
- Grapsid crab
- Grasping dwarf sesamid
- Grass cerith
- Grass crack anemone
- Grass night shrimp
- Grass shrimp
- Grass sponge
- Grass squid
- Gravel maggot
- Gravel sea cucumber
- Gray auger
- Gray brittle star
- Gray cowry
- Gray dorid
- Gray encrusting anemone
- Gray encrusting compound tunicate
- Gray encrusting sponge
- Gray hairysnail
- Gray hermit crab
- Gray moon sponge
- Gray mussel
- Gray plexaurella
- Gray puffball sponge
- Gray pygmy-venus
- Gray sand star
- Gray sea rod
- Gray sea-pen
- Gray snakeskin-snail
- Gray venus
- Gray whelk
- Gray's bamboo coral
- Gray's beaked whale
- Gray's soft coral
- Gray's spinner dolphin
- Graybeard Aspella
- Greasyback shrimp
- Great flowerbud coral
- Great lamellaria
- Great mediterranean scallop
- Great nembrotha
- Great phyllodesmium
- Great piddock
- Great puncturella
- Great slippersnail
- Great spotted cowrie
- Great star coral
- Great tellin
- Great tooth hydroid
- Great worm shell
- Greater argonaut
- Greater blue-ringed octopus
- Greater brain coral
- Greater hooked squid
- Greater sea anemone
- Greater sea fan coral
- Greater shining bobtail
- Greedy dovesnail
- Greedy isopod
- Greek bathing sponge
- Greeley's dorid
- Green abalone
- Green Acropora commensal shrimp
- Green balloon aeolis
- Green Bomber Worm
- Green bootlace
- Green boring sponge
- Green brittle star
- Green bubble
- Green bubble shell
- Green bubble snail
- Green chiton
- Green coral shrimp
- Green crosslandia
- Green Cuthona
- Green egg crab
- Green Elysia
- Green erato
- Green eyed cup coral
- Green falsejingle
- Green Finger Sponge
- Green flat rock crab
- Green flatworm
- Green foot ‘opihi
- Green hermit crab
- Green Incrusting Tunicate
- Green jackknife
- Green keyhole limpet
- Green mantis shrimp
- Green melibe
- Green mud crab
- Green music volute
- Green open brain coral
- Green ormer
- Green oxynoe
- Green oyster worm
- Green panama keyhole limpet
- Green polybranchia
- Green porcelain crab
- Green ribbon worm
- Green robusta
- Green rock crab
- Green rock lobster
- Green sapsucker
- Green sea cucumber
- Green sea mat
- Green sea mouse
- Green sea slug
- Green sea urchin
- Green shrimp
- Green snapping shrimp
- Green spiny crab
- Green spiny lobster
- Green Sponge
- Green spoon worm
- Green staghorn coral
- Green star polyp
- Green starsnail
- Green sunset clam
- Green tiger prawn
- Green top shell
- Green torch
- Green turban
- Green tuskshell
- Green urn ascidian
- Green whelk
- Green-banded fiddler crab
- Green-banded snapping shrimp
- Green-base tegula
- Green-eye dancing shrimp
- Green-eyed fiddler crab
- Green-eyed hermit crab
- Green-lipped mussel
- Green-ringed ascidian
- Green-spined salmacis
- Green-Spotted Jelly
- Green-tinged sponge
- Green's miniature cerith
- Green/gold tularia
- Greenfish sea cucumber
- Greenish glauconomya
- Greenland glass-scallop
- Greenland margarite
- Greenland nutclam
- Greenland sea anemone
- Greenland shrimp
- Greenland smoothcockle
- Greenland star
- Greenland wentletrap
- Greenleaf worm
- Greenlip abalone
- Greenmark hermit crab
- Greentail shrimp
- Gregarious fanworm
- Gregarious jellyfish
- Grey bonnet
- Grey leather sponge
- Grey rough shell
- Grey sea fan black coral
- Grey side-grilled slug
- Grey topshell
- Grey volcano barnacle
- Grey wall sponge
- Grey's mudsnake
- Gribble
- Griffen's isopod
- Grimald's nylon shrimp
- Grimaldi scaled squid
- Grimaldi's black coral
- Grimaldi's chiroteuthid squid
- Grimaldi’s flapjack octopod
- Grinning tun
- Gritty doris
- Groove-toothed cowry
- Grooveback shrimp
- Grooved brain coral
- Grooved carpet shell
- Grooved cowry
- Grooved crust coral
- Grooved cuttlefish
- Grooved eulima
- Grooved lobsterette
- Grooved moonsnail
- Grooved mussel crab
- Grooved odontozonid
- Grooved razor clam
- Grooved sea cucumber
- Grooved sea squirt
- Grooved tanner crab
- Grooved trophon
- Grooved-blade sea whip
- Gruner's mitre
- Guadalupe fur seal
- Gualteri's moon snail
- Gualtieri's top-shell
- Guam hermit crab
- Guam odontoglaja
- Guamanian nerite
- Guaymas solecurtus
- Guiana dolphin
- Guiana mud shrimp
- Guilding's Star
- Guinea cerith
- Guinea razor clam
- Guinea shrimp
- Guinea striped shrimp
- Guinea's sea krait
- Guinean cuttlefish
- Guinean thumbstall
- Gulf dovesnail
- Gulf frog crab
- Gulf ghost crab
- Gulf grassflat crab
- Gulf marsh fiddler
- Gulf oyster drill
- Gulf sand fiddler
- Gulf sandmole
- Gulf stone crab
- Gulf Stream keyhole limpet
- Gulf stream miter
- Gulf Stream topsnail
- Gulfweed crab
- Gumboot chiton
- Gunnamatta Dendrodoris
- Gunner's amphatretid worm
- Gunpowder star
- Gunter's octopus
- Guppy strawberry-cockle
- Gurney's sea pen
- Gutless awningclam
- Guyana swamp mussel
- Gymnodoris
- Haddon's anemone
- Haig's porcelain crab
- Hailstorm prickly-winkle
- Hair net black coral
- Hair worm
- Hairback fiddler
- Hairy ark
- Hairy blackfish
- Hairy chiton
- Hairy cockle
- Hairy coral crab
- Hairy fan lobster
- Hairy hermit
- Hairy hermit crab
- Hairy matchbox crab
- Hairy melibe
- Hairy mushroom anemone
- Hairy mussel
- Hairy octopus
- Hairy philobrya
- Hairy porcelain crab
- Hairy red hermit crab
- Hairy river prawn
- Hairy rock crab
- Hairy sea fan coral
- Hairy sea urchin
- Hairy sea-mat
- Hairy sea-squirt
- Hairy snapping shrimp
- Hairy spiny doris
- Hairy sponge crab
- Hairy squat lobster
- Hairy stone crab
- Hairy swimming crab
- Hairy tennis ball horny sponge
- Hairy triton
- Hairy whelk
- Hairy yellow hermit
- Hairy-clawed hermit crab
- Hairy-handed shore crab
- Hairy-leg porcelain crab
- Hairyclaw porcelain crab
- Hakodate chiton
- Hakodate sand shrimp
- Hakunamatata's aeolid
- Half-banded mitre
- Half-brown miter
- Half-crenated ark
- Half-hairy mussel
- Half-heart cockle
- Half-naked pen shell
- Half-pitted miter
- Half-propeller ark
- Half-scratched tusk
- Half-smooth odostome
- Half-smooth tuskshell
- Half-striated donax
- Half-swimmer cowry
- Half-white limpet
- Halfround cardita
- Halgerda
- Halloween crab
- Halloween hermit crab
- Halomitra coral
- Hamann's aeolid
- Hamille's limpet
- Hamlet's ophelia worm
- Hammer coral
- Hammer octopus
- Hammer oyster
- Hammer-finger shrimp
- Hammer-tipped sea pen
- Hammerclaw snapping shrimp
- Hammerhead Doto
- Hanasaki crab
- Hancock's flatworm
- Hancock's nudibranch
- Handprint Discodoris
- Handsome Engina
- Hanging stomach jelly
- Hannan's pygmy squid
- Hansine seaslug
- Harbor porpoise
- Harbour spidercrab
- Hard coral hermit crab
- Hard gnarled clump sponge
- Hard razor clam
- Hard tube worm
- Hard-fingered sea cucumber
- Hardback shrimp
- Hardhusk rock shrimp
- Hardshell shrimp
- Hardwick's sea urchin
- Hardwicke's spine-bellied sea snake
- Hardy leather coral
- Harlequin blue doris
- Harlequin brittle star
- Harlequin cowrie
- Harlequin glass-slug
- Harlequin miter
- Harlequin shrimp
- Harp baby-bubble
- Harp carinaria
- Harp lora
- Harp shell
- Harp sponge
- Harp turrid
- Harplike marginella
- Harris mud crab
- Hartweg's chiton
- Haswell's margin shell
- Hat coral
- Hat sponge
- Hatched pedicularia
- Hatchet surfclam
- Havana box crab
- Havana cone
- Hawaiian acorn worm
- Hawaiian anchialine shrimp
- Hawaiian bobtail squid
- Hawaiian cave shrimp
- Hawaiian flying squid
- Hawaiian glass shrimp
- Hawaiian glass-sponge shrimp
- Hawaiian gold coral
- Hawaiian hermit
- Hawaiian hingebeak
- Hawaiian hypogeal shrimp
- Hawaiian lovenia
- Hawaiian mussel
- Hawaiian night shrimp
- Hawaiian octopus
- Hawaiian oyster
- Hawaiian pearloyster shrimp
- Hawaiian rockpool shrimp
- Hawaiian seagrass snail
- Hawaiian snapping shrimp
- Hawaiian swimming crab
- Hawaiian tiger cowry
- Hawaiian turban
- Hawaiian whitefoot hermit crab
- Hawknose shrimp
- Hawksbill turtle
- Hawkwing conch
- Hay's rocksnail
- Hazelnut ark
- Head coral
- Headless chicken monster
- Headshield slug
- Heaping fiddler crab
- Heart axinopsid
- Heart cockle
- Heart urchin
- Heart urchin pea crab
- Heart-shaped galeommatid
- Hearty petricola
- Heath's chiton
- Heath's spiny star
- Heath's sponge
- Heavenly sponge
- Heaviside's dolphin
- Heavy African ark
- Heavy macoma
- Heavy morum
- Heavyhand rubble crab
- Hebrew cone
- Hebrew moon-shell
- Hector's beaked whale
- Hector's dolphin
- Hedge carnation coral
- Hedgehog coral
- Hedgehog murex
- Hedgpeth's dorid
- Hedgpeth's sapsucker
- Hedley's cuttlefish
- Heffernani's sea star
- Heikegani
- Helical acorn worm
- Helicid pteropod
- Helix vitrinella
- Hell's fire anemone
- Heller's fiddler crab
- Helmet carinaria
- Helmet coralsnail
- Helmet crab
- Helmet jellyfish
- Helmet marginella
- Helmet puncturella
- Helmet shell
- Helmet squid
- Helmet whelk
- Hembel's rock barnacle
- Hemphill fileclam
- Hemphill kelp crab
- Hemphill surfclam
- Hemphill's chiton
- Hemprich's brain coral
- Hen clam
- Hen murex
- Henderson hingebeak
- Henscomb hydrobe
- Henslow's swimming crab
- Hentschel's horny sponge
- Hercules club whelk
- Herdman coastal shrimp
- Herdman eualid
- Herdman's sea squirt
- Hermissenda
- Hermit anemone
- Hermit coral
- Hermit crab anemone
- Hermit crab sponge
- Hermit crab zoanthid
- Heron ardeadoris
- Herringbone hydroid
- Hertwig's sea anemone
- Heteropod
- Hexagon tuskshell
- Hexagonal murex
- Hians tivela
- Hiant venus
- Hidden anemone
- Hidden cup coral
- Hidden hermit
- Hieroglyphic Cone
- High ridge mud shrimp
- High-bridge chickpea cowrie
- High-spined commensal hydroid
- Higoromo shrimp
- Hikueru Glossodoris
- Hilgendorf's sea spider
- Hilgendorf's tree coral
- Hill's Pleurobranchus
- Hilo collector crab
- Hilton shrimp
- Hind's Mopalia
- Hingebeak shrimp
- Hinged longbeak
- Hinged shrimp
- Hipolito niso
- Hirase's cowrie
- Hirase's scallop
- Hirase's slitsnail
- Hirase's volute
- Hiro's sea slug
- Hirondelle black coral
- Histrio Dosinia
- Hjort’s whiplash squid
- Hoary rubble crab
- Hoe surf clam
- Hoffman's horny sponge
- Hokkai shrimp
- Hole-dwelling galeommatid
- Hollow cork horny sponge
- Holmes Bay shrimp
- Holmes glass-scallop
- Holthuis cleaner shrimp
- Holthuis urchin shrimp
- Homole crab
- Honey cowry
- Honeycomb coral
- Honeycomb Coral Crab
- Honeycomb miter
- Honeycomb oyster
- Honeycomb Plate Coral
- Honeycomb worm
- Hong Kong Coral Gall Crab
- Hong Kong oyster
- Hong Kong sea dragon
- Honker's Cone
- Hood coral
- Hood puncturella
- Hooded aeolid
- Hooded cuttlefish
- Hooded oyster
- Hooded seal
- Hooded shrimp
- Hooded slipper lobster
- Hooded Snapping Shrimp
- Hook-hinge montacutid
- Hooked ark
- Hooked enope squid
- Hooked mussel
- Hooked nutclam
- Hooked slipper limpet
- Hooked squid
- Hooked surfclam
- Horastrea coral
- Horn coral
- Horn decorator crab
- Horn drupe
- Horn snail
- Horn-of-plenty Caecum
- Horn-tusk
- Horned crinoid crab
- Horned ghost crab
- Horned helmet
- Horned isopod
- Horned mouse cowry
- Horned mud crab
- Horned murex
- Horned octopus
- Horned sapsucker
- Horned sea urchin
- Horned shrimp
- Horned stalked jellyfish
- Horned turban
- Hornwrack
- Horny auger
- Hornyhand hermit
- Horrid elbow crab
- Horrid nassa
- Horse clam
- Horse conch
- Horse mussel
- Horse sponge
- Horsehair crab
- Horseman anemone
- Horseshoe shrimp
- Horseshoe worm
- Horsetail hydroid
- Hot dog sea anemone
- Hotessier's dove-shell
- Hotlips spider crab
- Hottentot fish louse
- Hourglass dolphin
- Hoyle's enope squid
- Huang Island long-snouted worm
- Hubb's octopus
- Hubbs' beaked whale
- Huddle hydroid
- Hudson's horned dorid
- Huinay cup coral
- Huinay's cactus sponge
- Hula skirt siphonophore
- Humble club coral
- Humble wentletrap
- Humboldt Current krill
- Humic marsh crab
- Hump coral
- Hump-tailed isopod
- Humpback coral
- Humpback cowrie
- Humpback dolphin
- Humpback nylon shrimp
- Humpback prawn
- Humpback scallop
- Humpback shrimp
- Humpback soft coral shrimp
- Humphrey's buccinum
- Humphrey's wentletrap
- Humpy shrimp
- Hunchback amphipod
- Hunchback Distorsio
- Hunchback locust lobster
- Hundred-line cockle
- Hunter shrimp
- Husked horny sponge
- Hyaline fileclam
- Hyaline scallop
- Hyaline tellin
- Hydrocoral barnacle
- Hydroid
- Hydroid worm
- Hyena Cone
- Hyman's flatworm
- Hyndman's horny sponge
- Hyperiid amphipod
- Hypselodoris
- Ice amphipod
- Ice cream cone worm
- Ice fire coral
- Ice krill
- Iceland moonsnail
- Iceland scallop
- Iceland whelk
- Icon star
- Icy finned octopod
- Icy lamellaria
- Ida tellin
- Idaline dove-shell
- Ijima's sea snake
- Illg's horny sponge
- Imbricate Caecum
- Imbricate oyster
- Immaculate moonsnail
- Impatient sea cucumber
- Imperforate bubble
- Imperial anemone
- Imperial cone
- Imperial harp
- Imperial mitra
- Imperial nudibranch
- Imperial plocamopherus
- Imperial surf clam
- Imperial thorny oyster
- Imperial venus
- Imperial wentletrap
- Impressed odostome
- Imprinted engraved crab
- Incised Northern turrid
- Inclined Atlanta
- Incongruous ark
- Incongruous glass-scallop
- Incongruous lirularia
- Incongruous macoma
- Inconspicuous yoldia
- Incubating anemone
- Incurved capsnail
- Indefinite horny sponge
- Indented macoma
- Indian backwater oyster
- Indian brown mussel
- Indian Caloria
- Indian carrier-shell
- Indian chank
- Indian feather duster worm
- Indian lined shrimp
- Indian nylon shrimp
- Indian Ocean aeolid
- Indian Ocean humpback dolphin
- Indian Ocean lobsterette
- Indian red shrimp
- Indian sea hare
- Indian sea star
- Indian small prawn
- Indian squid
- Indian turrid
- Indian volute
- Indian white prawn
- Indio shrimp
- Indo-Pacific ark
- Indo-Pacific bottlenose dolphin
- Indo-Pacific common dolphin
- Indo-Pacific finless porpoise
- Indo-Pacific furry lobster
- Indo-Pacific Horseshoe Crab
- Indo-Pacific humpback dolphin
- Indo-pacific shipworm
- Indo-Pacific swamp crab
- Indonesian golden crab
- Indus fiddler crab
- Inequivalve ark
- Inflated ark
- Inflated axinopsid
- Inflated diplodon
- Inflated dove shell
- Inflated file shell
- Inflated macoma
- Inflated marsh clam
- Inflated pandora
- Inflated pen shell
- Inflated spiny crab
- Inflated stilt crab
- Inflated toothshell
- Inflexed cavoline
- Ingle deep-sea red crab
- Ingolf zoanthid
- Ink-stain dorid
- Inornate Gymnodoris
- Inornate pandora
- Insular velvet shrimp
- Interlyrate miter
- Intermediate barrel-bubble
- Intermediate bobtail squid
- Intermediate cyphoma
- Intermediate Fiddler Crab
- Intermediate fusiform sea cucumber
- Intermediate hairy triton
- Intermediate rock shell
- Intermediate sea fan coral
- Intermediate solarelle
- Intermediate trifora
- Intermediate valley coral
- Intermediate yoldia
- Interrupted cone
- Interrupted lucine
- Interrupted periwinkle
- Interrupted turbonille
- Interrupted vitrinella
- Intertidal coastal shrimp
- Intertidal Pseudoscorpion
- Intricate fire coral
- Intricate phos
- Iridescent clam
- Iridescent fireworm
- Iridescent nutclam
- Iridescent shrimp
- Iridescent swimming crab
- Iridescent worm
- Iridescent yoldia
- Irrawaddy dolphin
- Irregular boomerang coral
- Irregular calcareous tubeworm
- Irregular wormsnail
- Irus clam
- Isabel surf clam
- Isabella cowrie
- Isao taki mitre
- Isaotaki buccinum
- Isipingense ascidian
- Iskra’s glitter worm
- Island aeolid
- Island coastal shrimp
- Island hermit
- Island inshore squid
- Italian deepsea shrimp
- Italian keyhole limpet
- Ivell's Sea Anemone
- Ivory barnacle
- Ivory bryozoan
- Ivory cerith
- Ivory chalice-bubble
- Ivory chiton
- Ivory cone
- Ivory cowry
- Ivory heart clam
- Ivory pea crab
- Ivory stony coral
- Ivory Tree Coral
- Ivory tuskshell
- Izumi shrimp
- Jack-knife shrimp
- Jackknife clam (Solen corneus)
- Jacknife spider crab
- Jacna abalone
- Jaguar round crab
- Jamaica boring sponge
- Jamaica eulima
- Jamaica limpet
- Jamaica nutclam
- Jan mayen alvania
- Jan Mayen sea anemone
- Janjuki polycera
- Janna's dorid
- Janss' dorid
- Janthina
- January octopus
- Japan armina
- Japan fileclam
- Japan sea cucumber
- Japan venus
- Japanese abalone
- Japanese Actinocyclus
- Japanese babylon
- Japanese baking scallop
- Japanese bifurcate mussel
- Japanese blunthorn lobster
- Japanese bobtail
- Japanese bonnet
- Japanese bubble snail
- Japanese cirolanid sea pill bug
- Japanese cockle
- Japanese common chiton
- Japanese conch
- Japanese Corbicula
- Japanese cucumaria
- Japanese deepwater carrier crab
- Japanese dorid
- Japanese dosinia
- Japanese false cerith
- Japanese fan lobster
- Japanese favorinus
- Japanese flying squid
- Japanese furrow lobster
- Japanese ghost shrimp
- Japanese golden crab
- Japanese goose barnacle
- Japanese grata limpet
- Japanese hooked squid
- Japanese horse clam
- Japanese hydroid
- Japanese jewel box
- Japanese jewel top
- Japanese lancelet
- Japanese limops
- Japanese lobster
- Japanese mantis shrimp
- Japanese mitten lobster
- Japanese moon scallop
- Japanese mud shrimp
- Japanese nassa
- Japanese nylon shrimp
- Japanese palolo
- Japanese pancake devilfish
- Japanese pearl oyster
- Japanese petricolid
- Japanese porcelain crab
- Japanese porcupine crab
- Japanese pygmy octopus
- Japanese rock crab
- Japanese rocksnail
- Japanese scaleworm
- Japanese scallop
- Japanese sea cucumber
- Japanese shame faced crab
- Japanese shore crab
- Japanese skeleton shrimp
- Japanese smooth brittle star
- Japanese snapping shrimp
- Japanese spineless cuttlefish
- Japanese spiny lobster
- Japanese spinyridge
- Japanese sponge crab
- Japanese squat lobster
- Japanese squid
- Japanese swimming crab
- Japanese wonder snail
- Jason's nudibranch
- Jasper cone
- Jasper dwarf olive
- Jaume's keyhole limpet
- Javanese false limpet
- Javanese razor clam
- Javanese turrid
- Jaw worm
- Jawed glistenworm
- Jawla paste shrimp
- Jeanne's Vitrinella
- Jedo venus
- Jeffrey's cadulus
- Jelly synascidian
- Jellybean footless sea cucumber
- Jellyfish worm shell
- Jembret shrimp
- Jenner's Cowry
- Jerdon's sea snake
- Jester cowrie
- Jewel anemone
- Jewel box
- Jewel bubble
- Jewel enope squid
- Jewel fire squid
- Jewel jellyfish
- Jewel stony coral
- Jewel-box pea crab
- Jeweled anemone hermit
- Jeweled triton
- Jewell squid
- Jickeli’s Cone
- Jimble
- Jinga shrimp
- Jingle pearl oyster
- Jingle shell
- Johnson's bubblegum coral
- Johnson's Caecum
- Johnston's balloon eolis
- Johnston's ornate worm
- Johnstone's Junonia
- Joker coral
- Joker's boomerang coral
- Joking Crenella
- Jolly green giant
- Jonah crab
- Jonston's sea star
- Jordan's cushion star
- Jorge's soft coral
- Jorunna
- Josephine's moon-shell
- Joubin's Goniodoris
- Joubin's squid
- Juan Fernández fur seal
- Juan fernandez rock lobster
- Judas ear cassidula
- Judd's scallop
- Jujube Bulla
- Juke's semele
- Julia's bivalved slug
- Juliana's seahare
- Jullien's exochella
- Junonia
- Jussieu's chanculus
- Kabira phyllodesmium
- Kadal shrimp
- Kaga whelk
- Kahe point crab
- Kamchatka six-rayed star
- Kanam Hypselodoris
- Kanga nudibranch
- Kangaroo nudibranch
- Kangaroo shrimp
- Karubar octopus
- Keel worm
- Keel-bellied water snake
- Keeled aforia
- Keeled Australian top shell
- Keeled barrel-bubble
- Keeled clio
- Keeled heart urchin
- Keeled isopod
- Keeled mud lobster
- Keeled pandora
- Keeled rock shrimp
- Keeled solarelle
- Keeled sundial
- Keeled witch mantis shrimp
- Keen's tritonid
- Keep's chiton
- Kegaki oyster
- Kellet's whelk
- Kelp crab
- Kelp curler
- Kelp encrusting bryozoan
- Kelp fly
- Kelp humpback shrimp
- Kelp limpet
- Kelp membranipora
- Kelp petricolid
- Kelp scallop
- Kelp visored shrimp
- Kelp worm
- Kelp-dwelling sea flea
- Kelsey pouchclam
- Kemp's razor shell
- Kemp's ridley sea turtle
- Ken's cuttlefish
- Kennerley venus
- Kenya tree coral
- Keratose sponge
- Kerguelen dolphin
- Kerguelen limpet
- Kerguelen malletia
- Kerguelen mussel
- Kerguelen nut shell
- Kernel chalice-bubble
- Kernel siraius
- Kettle mitre
- Key grass sponge
- Key West cyclostreme
- Key West latirus
- Keyhole limpet
- Keyhole sand dollar
- Keyhole urchin spoon worm
- Keys simnia
- Keys topsnail
- Kicking mantis shrimp
- Kiddi shrimp
- Kidneybean thracia
- Kii murex
- Kilburn's auger
- Killer shrimp
- Kimio's cone
- Kina
- Kincaid coastal shrimp
- King cuttlefish
- King helmet
- King ocellate octopus
- King ragworm
- King scallop
- King venus
- King's aldisa
- King's crown
- King's sea snake
- Kinglet rock shrimp
- Kingly toothshell
- Kings coral
- Kingworm
- Kishi velvet shrimp
- Kisslip cuttlefish
- Kitano locust lobster
- Kloss' sea snake
- Knave marginella
- Knife shrimp
- Knifebone cuttlefish
- Knight rock shrimp
- Knob coral
- Knobbed argonaut
- Knobbed mud crab
- Knobbed spiny crab
- Knobbed trophon
- Knobbed whelk
- Knobbly anemone
- Knobbly dogwhelk
- Knobbly zoanthid
- Knobby anemone
- Knobby bobtail squid
- Knobby brain coral
- Knobby cactus coral
- Knobby candelabra
- Knobby keyhole limpet
- Knobby scallop
- Knobby sea anemone
- Knobby sea slug
- Knobby spindle
- Knobby star coral
- Knobby swimcrab
- Knobby zoanthidean
- Knobbyhand hermit
- Knobkneed crestleg crab
- Knobtooth prawn
- Knotfinger mud crab
- Knott's sea squirt colony
- Knotted fan coral
- Knotted liomera
- Knotted sea urchin
- Knotted thread hydroid
- Knudsen's bobtail squid
- Kobelt's ark shell
- Kobi cuttlefish
- Kobi squid
- Koch's bottletail squid
- Koch's cerith
- Kodiak whelk
- Kogamogai limpet
- Kolibri shrimp
- Korean chiton
- Korean common dogwhelk
- Korean lugworm
- Korean mud snail
- Krebs corbula
- Krebs's hairy triton
- Krebs's wentletrap
- Krempf's phyllidiopsis
- Kropp's coral hermit crab
- Kroyer's hairysnail
- Krygier spinytail
- Kuiter's chromodoris
- Kükenthal's cleaner shrimp
- Kulkulcan cone
- Kumamoto oyster
- Kune's chromodoris
- Kuril Islands sea cucumber
- Kuril seal
- Kurile spiny star
- Kuro shrimp
- Kuroda's lyria volute
- Kuroda's sea hare
- Kuroda's snipe's bill murex
- Kurr propellerclam
- Kuruma prawn
- Kurz's distorsio
- La Plata donax
- Labile stilt crab
- Labio monodont
- Laboute's noumea
- Laboute's sea snake
- Labyrithical boring sponge
- Lace coral
- Lace coral (bryozoan)
- Lace lettuce coral
- Lace murex
- Lacerate tellin
- Lacerate venus shell
- Laciniate conch
- Laciniate murex
- Laciniated dolphin shell
- Lacuna
- Lacunal sea potato
- Lacy ball sponge
- Lacy basket sponge
- Lacy bryozoan
- Lacy crust bryozoan
- Lacy horny sponge
- Ladder ascidian
- Ladder hornsnail
- Ladder whelk
- Lady cleaner shrimp
- Lady-in-waiting venus
- Lagoon brittle star
- Lagoon sand shrimp
- Lagoon sandworm
- Lagoon spire snail
- Laguna lebbeid
- Laguna Madre fiddler
- Lahille's bottlenose dolphin
- Lake Merritt cuthona
- Lake prawn
- Lamarck's coral-shell
- Lamarck's cowrie
- Lamarck's razor shell
- Lamarck's sheet coral
- Lamarck's spiny rock-shell
- Lambe's calcareous sponge
- Lambe's horny sponge
- Lambert's sea snake
- Lamellar venus
- Lamellaria
- Lamellate false-dial
- Lamellate venus
- Lamellated oyster
- Lamellose coral-shell
- Lamellose solarelle
- Lamellose wentletrap
- Lamington urchin
- Lamp shell
- Lampert's sea cucumber
- Lance auger
- Lance mactra
- Lance urchin
- Lance's dorid
- Lance's doto
- Lancelet
- Lancer rose shrimp
- Lancer swimcrab
- Lantern clams
- Laptev walrus
- Large baeolidia
- Large banded keyhole limpet
- Large burrowing sea cucumber
- Large cirroctopod
- Large claw snapping shrimp
- Large cranch squid
- Large dog cockle
- Large flower coral
- Large green phoronid
- Large heart urchin
- Large hydroid worm
- Large ivory coral
- Large knobby bamboo coral
- Large Mexican fiddler crab
- Large myadora
- Large ostrich foot
- Large polyp coral
- Large polyp stone coral
- Large red brachiopod
- Large smooth brachiopod
- Large spiny star
- Large star coral
- Large strigilla
- Large striped cuttlefish
- Large trough shell
- Large warted sea slug
- Large wedge shell
- Large-bud hydroid
- Large-fin octopus squid
- Large-headed sea snake
- Large-polyped deep-sea soft coral
- Large-ribbed cardita
- Large-spined sea pen
- Largebrain root coral
- Largemouth eulima
- Larger knob coral
- Larger star coral
- Larger-spotted shame-faced crab
- Largilliert's Mactra
- Larson's jellyfish
- Larvacean
- Las cruces aeolid
- Lateral mussel
- Latiaxis
- Latirus
- Latreille's sentinel crab
- Lattice calcareous sponge
- Lattice sponge of the fjords
- Lattice-work bryozoan
- Latticed corklet
- Lauan anchialine shrimp
- Laurent's scallop
- Laurentian horny sponge
- Lavender rope sponge
- Lavender-mouth conch
- Laver spire shell
- Layered clasping barnacle
- Lazarus jewel box
- Lea crenella
- Lea's spoon clam
- Leach's cranch squid
- Leach's spider crab
- Leaden cone
- Leaden false olive
- Leaf barnacle
- Leaf coral
- Leaf crust bryozoan
- Leaf oyster
- Leaf plate montipora
- Leaf sheep
- Leaf-porter crab
- Leaf-scaled sea snake
- Leaf-spiculed solenogaster
- Leafy glass sponge
- Leafy hornmouth
- Leafy jewelbox
- Leafy soft coral
- Leafy yellow horny sponge
- Lean Western nassa
- Least skeleton shrimp
- Least valley coral
- Leather anemone
- Leather coral
- Leather Donax
- Leather jacket tonicia
- Leather sponge
- Leather star
- Leather-backed doris
- Leather-soft mushroom
- Leathery anemone
- Leathery barrel sponge
- Leathery sea squirt
- Leathery seaslug
- Leech nemertean
- Left-hand melampus
- Left-hand whelk
- Left-handed jewel box
- Left-handed neptune
- Leidy's burrowing anemone
- Leidy's micruran
- Lemon clawed fiddler crab
- Lemon drop sea slug
- Lemon notodoris
- Lemon pleurobranch
- Lemon sponge
- Lens lucine
- Lenticular axinopsid
- Lenticulate yoldia
- Lentil bobtail squid
- Lentil sea spider
- Leopard Chromodoris
- Leopard cone
- Leopard crinoid shrimp
- Leopard flatworm
- Leopard jorunna
- Leopard ribbon worm
- Leopard scallop
- Leopard sea cucumber
- Leopard worm
- Leptastrea
- Leptoria
- Leptosynapta montacutid
- Lesser acorn worm
- Lesser blue crab
- Lesser Brazilian fiddler crab
- Lesser flying squid
- Lesser glass shrimp
- Lesser gooseberry sea squirt
- Lesser horn coral
- Lesser knob coral
- Lesser lacuna
- Lesser rock shrimp
- Lesser shining bobtail
- Lesser speckled cup coral
- Lesser spider crab
- Lesser Sponge Crab
- Lesser star coral
- Lesser star-turris
- Lesser starlet coral
- Lesser striped shrimp
- Lesser swimming crab
- Lesser tagelus
- Lesser valley coral
- Lesser-girdled triton
- Lesser-spotted shame-faced crab
- Lettered cone
- Lettered olive
- Lettered venus
- Lettuce coral
- Lettuce sea slug
- Levin's sea cucumber
- Lewis's moonsnail
- Lichen coral
- Lienard's cone
- Ligate false spindle
- Light bulb sea squirt
- Light bushy galeopsis
- Light glass shrimp
- Light yellow chicken-liver sponge
- Light-coloured spiny sea cucumber
- Light-edged ribbon worm
- Light-spotted sea cucumber
- Light's anemone
- Lightbulb tunicate
- Lightning dove-shell
- Lightning pitar
- Lightning whelk
- Lightweight moonsnail
- Lightweight murex
- Likeable cerberilla
- Lilac auger
- Lilac coral crab
- Lilac Discodoris
- Lilac trough shell
- Lilliput longarm octopus
- Lilliput octopus
- Lily hydroid
- Lily sea pen
- Lily venus
- Limbaugh's cadlina
- Limpid montacutid
- Limulus leech
- Limy brittle star
- Limy tubeworm
- Linares sickle crab longlegs
- Linckia
- Linckia snail
- Lindahl's droopy sea pen
- Lindahl's zoanthid
- Linear skeleton shrimp
- Lineate dovesnail
- Lineated cone
- Lined anemone
- Lined chalice-bubble
- Lined chiton
- Lined erycina
- Lined fireworm
- Lined moon snail
- Lined nembrotha
- Lined nerite
- Lined scallop
- Lined sea anemone
- Lined sea star
- Lined thuridilla
- Lined top
- Lined top shell
- Lined Water Jelly
- Lineolate periwinkle
- Lingula
- Link nutclam
- Linne's baby-bubble
- Liomera
- Lion mane aeolid
- Lion nudibranch
- Lion's paw scallop
- Lip conch
- Lip triton
- Liquorice sea cradle
- Lirate whelk
- Lirularia
- Lirulate margarite
- Lisa's mantis shrimp
- Lischke's cone
- Lister's keyhole limpet
- Lithograph cone
- Lithophyllon
- Little Aspella
- Little ass cowry
- Little basket drupe
- Little bear cowry
- Little black mussel
- Little brown barnacle
- Little brown mussel
- Little burrowing urchin
- Little cockle
- Little cuttlefish
- Little frog triton
- Little horn caecum
- Little knobby scallop
- Little margarite
- Little mustache sponge
- Little oat marginella
- Little Patagonian globe
- Little pileworm sea-nymph
- Little pink urchin
- Little pitcher conch
- Little porcelain crab
- Little radish auger
- Little red encrusting coral
- Little red star
- Little sea hare
- Little seabristle
- Little sentinel crab
- Little shore isopod
- Little squid
- Little starfish
- Little striped barnacle
- Little teardrop marginella
- Little tomato
- Little toothshell
- Little trumpet mitre
- Little turnip whelk
- Little vase sponge
- Little-ball bathyark
- Little-comb crenella
- Little-comb lucine
- Little-cone limpet
- Little-file macoma
- Little-fox miter
- Little-pill pitar
- Little-ribbed cardiomya
- Little-snout dipperclam
- Littoral pistol shrimp
- Littoral pulmonate limpet
- Littoral spoon clam
- Livebearing nemertean
- Liver sponge
- Livid cone
- Livid macron
- Livid moonsnail
- Livingstone's nembrotha
- Liz's phyllidiella
- Liza's aeolid
- Lizard mantis
- Loaded nassa
- Loaf bread
- Lobate boring horny sponge
- Lobate brittle star
- Lobate drupe
- Lobate mud crab
- Lobate sponge
- Lobate toothshell
- Lobe coral
- Lobe shell
- Lobed anemone
- Lobed comb jelly
- Lobed cup coral
- Lobed decorator crab
- Lobed octopus
- Lobed tunicate
- Lobefront mud crab
- Lobiger
- Lobophyllia
- Lobophytum
- Lobster krill
- Lobster shrimp
- Lobsterette
- Loch Goil sea squirt
- Loch's chromodoris
- Locust amphipod
- Lodderena
- Loebbeck's simnia
- Loggerhead snapping shrimp
- Loggerhead sponge
- Loligo squid
- Lollipop ascidian
- Lollipop tunicate
- Lomanotus
- Long abra
- Long arm octopus
- Long barrel squid
- Long bristle eunice
- Long clawed porcelain crab
- Long clawed spider crab
- Long leaf irus
- Long legged spider crab
- Long nose shrimp
- Long sea whip
- Long spindle
- Long spined brittle star
- Long tentacle anemone
- Long tentacle plate coral
- Long trough shell
- Long-armed brittle star
- Long-armed crab
- Long-beaked common dolphin
- Long-cirri phyllodesmium
- Long-clawed squat lobster
- Long-eared nudibranch
- Long-finned pilot whale
- Long-flowered bamboo coral
- Long-handed masking crab
- Long-horned murex
- Long-horned skeleton shrimp
- Long-neck triton
- Long-slot puncturella
- Long-snouted volva
- Long-spiculed glistenworm
- Long-spined henricia
- Long-spined sea urchin
- Long-spined tree coral
- Long-tentacled anemone
- Long's aeolid
- Longarm coral crab
- Longarm cuttlefish
- Longarm prawn
- Longarm river prawn
- Longfin inshore squid
- Longfinger fiddler
- Longfinger hermit
- Longfinger neck crab
- Longfinger purse crab
- Longfingered peeler crab
- Longhand hermit
- Longhand rubble crab
- Longhorn decorator crab
- Longleg frog crab
- Longlegged pea crab
- Longlegged spiny lobster
- Longley's carrier shell
- Longman's beaked whale
- Longnose spider crab
- Longspine sea fan
- Longspine starsnail
- Longspine swimming crab
- Longspined hairy crab
- Longtail grass shrimp
- Longtail seacat
- Longwrist hermit
- Look-around solarelle
- Loop worm
- Looping snail
- Loosanoff's haliclona
- Loose horny sponge
- Loose spiral hydroid
- Lopez's dorid
- Lora
- Lord dwarf-venus
- Loricate phyllidiopsis
- Loriciferan
- Loughlin's Steller sea lion
- Lovely abalone
- Lovely chiton
- Lovely cone
- Lovely donax
- Lovely micro-cockle
- Lovely nassa
- Lovely slitsnail
- Lovely solarelle
- Lovely venus
- Loven's horny sponge
- Lovén's sea urchin
- Lovenia
- Low-line pheasant
- Low-relief lettuce coral
- Low-rib ark
- Low-rib cockle
- Lowridge cactus coral
- Lucifer shrimp
- Lucine
- Lugworm
- Lugworm pea crab
- Luminescent parazoanthid
- Luminescent zoanthid
- Luminous bay squid
- Luminous copepod
- Luminous flying squid
- Lumpy chromodoris
- Lumpy overgrowing sponge
- Lumpy rice coral
- Lumpy rubble crab
- Lumpy stone crab
- Lunar dovesnail
- Lunate crassinella
- Lunz pea crab
- Lurid ark
- Lurid rocksnail
- Lush limpet
- Luster round crab
- Luteus cone
- Luzon sea star
- Luzon troughshell
- Lybian turrid
- Lynx cowrie
- Lynx Nudibranch
- Lyon's horny sponge
- Lyonsia
- Lyrate cockle
- Lyrate hard clam
- Lyrate miter
- Lyrate mitre
- Lyre cranch squid
- Lyre scissurelle
- Lyre whelk
- Lyre-formed lyria
- Lyria
- MacAndrew's Glassy-bubble
- MacAndrew's stony coral
- Macassar scallop
- Mace cone
- Macfarland's Runcina
- Macha clam
- Macleay's spurilla
- Macoma
- Macpherson's Phyllodesmium
- Macron
- Mactra
- Maculate horny sponge
- Maculate stony coral
- Maculated dwarf triton
- Maculated ivory whelk
- Maculated synaptid
- Maculated top
- Maculated triopha
- Maculated troughshell
- Madagascar nylon shrimp
- Madagascar tellin
- Made-up phyllodesmium
- Madokai gonate squid
- Madokai's cuttlefish
- Madras harp
- Madrella
- Madrepore
- Magdalena barrel-bubble
- Magdalena chiton
- Magellan mussel
- Magellan shrimp
- Magellan's encrusting soft coral
- Magellanic unicorn
- Magellanic volcano sponge
- Magellanic volute
- Magenta-striped nudibranch
- Magic cord worm
- Magnificent ceratosoma
- Magnificent Chromodoris
- Magnificent cuttlefish
- Magnificent feather duster
- Magnificent sea anemone
- Magnificent sea-star
- Magnificent shrimp
- Magnificent star
- Magnificent tree coral
- Magnificent tritonia
- Magnificent urchin
- Magnificent venus clam
- Magnificent volute
- Magnificent wentletrap
- Magnum pricklycockle
- Magus cone
- Magus gibbula
- Mahogany datemussel
- Mahogany sea cradle
- Mahogany topsnail
- Maidenhair mactra
- Majano anemone
- Major harp
- Maka-ʻa-loa
- Mako gonate squid
- Malacca cone
- Malacca razor shell
- Malayan mud shrimp
- Malayan rough shrimp
- Maldive cone
- Maldives Coral Shrimp
- Malleate shipworm
- Malletia
- Malpelo Island Land Crab
- Maltese sponge
- Manawatāwhi pāua
- Manchurian cecina
- Mancinella rock-shell
- Mandapam aeolid
- Mandela's nudibranch
- Maned sea anemone
- Mango seed sponge
- Mango sponge
- Mangrove crab
- Mangrove cricket
- Mangrove cupped oyster
- Mangrove diamondback terrapin
- Mangrove false spider crab
- Mangrove fiddler
- Mangrove flatworm
- Mangrove ghost crab
- Mangrove haminoea
- Mangrove hermit crab
- Mangrove Horseshoe Crab
- Mangrove lace coral
- Mangrove marsh crab
- Mangrove monitor
- Mangrove mud shrimp
- Mangrove murex
- Mangrove oyster
- Mangrove periwinkle
- Mangrove porcelain crab
- Mangrove prawn
- Mangrove sea slater
- Mangrove snail
- Mangrove stone crab
- Mangrove tree crab
- Mangrove tree-dwelling crab
- Mangrove Tunicate
- Mangrove upsidedown jellyfish
- Manila clam
- Manila piddock
- Mann's anemone
- Manning grass shrimp
- Manning hingebeak
- Mansfield's Latiaxis
- Mantle pea crab
- Mantled keyhole limpet
- Many-angled spindle
- Many-banded heart sea urchin
- Many-colored tellin
- Many-flowered carnation coral
- Many-knotted horny sponge
- Many-line lucine
- Many-line margarite
- Many-lined Chromodoris
- Many-named Caecum
- Many-rib Cyclocardia
- Many-rib puncturella
- Many-ribbed ark
- Many-ribbed hydromedusa
- Many-ribbed jellyfish
- Many-ribbed scallop
- Many-ribbed wentletrap
- Many-ridged venus
- Many-scaled worm
- Many-spined cockle
- Many-spotted dovesnail
- Many-tentacled sea anemone
- Maori Elysia
- Maori octopus
- Map cowrie
- Map octopus
- Maracaibo swimcrab
- Marble cone
- Marble crab
- Marbled brittle star
- Marbled chiton
- Marbled crenella
- Marbled fiddler
- Marbled jelly
- Marbled mitten lobster
- Marbled nassa
- Marbled octopus
- Marbled rock crab
- Marbled shrimp
- Marbled snapping shrimp
- Marbled stone crab
- Marbled swimcrab
- Marbled swimming crab
- Marbled turris
- Marbled venus
- Marcus' aeolid
- Marcus' noumea
- Marenzeller's stony coral
- Margareth's Daphnella
- Margarita murex
- Margarita snail
- Margarite nassa
- Margin ancilla
- Marginate conch
- Marginate drupe
- Marginella
- Maria Santana's Cliona
- Maria's cowry
- Mariana's Island star
- Marianina
- Marie's cowrie
- Marie's Mexichromis
- Marine earthworm
- Marine flatworm
- Marine leech
- Marine midge
- Marine mite
- Marine nematode
- Marine otter
- Marine prickly pear
- Marine ragworm
- Marine teardrop
- Marisla's chromodorid
- Maritime earwig
- Maritime Hypselodoris
- Marked diplodon
- Marlinspike
- Marmorate volute
- Maroon anemone
- Maroon hermit
- Maroon mangrove crab
- Maroon pimpled ear sponge
- Maroon Sponge Zoanthid
- Maroon stone crab
- Marsh clam
- Marsh crab
- Marsh grass shrimp
- Marsh periwinkle
- Marten's Macoma
- Marten's sidegill
- Marten's whelk
- Martin's murex
- Martin's rock shrimp
- Martini's tibia
- Martinique Crassinella
- Martinique tellin
- Marylee's auger
- Mask limpet
- Masked burrowing crab
- Masked crab
- Masked swimcrab
- Massive beige horny sponge
- Massive horny sponge
- Massive starlet coral
- Massive urn crab
- Massy's flapjack octopod
- Mat zoanthid
- Matagorda macoma
- Matchless Cone
- Matheson’s heart urchin
- Matted fiddler crab
- Mature Dosinia
- Maugean onchidoris
- Maui anchialine shrimp
- Māui dolphin
- Maura pen shell
- Mauritian conch
- Mauritius Bullia
- Mauve stinger
- Mauve sunetta
- Mauve-eyed hermit crab
- Mauve-mouth drill
- Maxima clam
- Maximum nerite
- Mayor toothshell
- Mazatlan pearl oyster
- Mazatlan's ark
- Maze brain coral
- Maze coral
- Maze's cone
- McDowell's sea snake
- McGinty wormsnail
- McGinty's Distorsio
- McGinty's latirus
- McGinty's oyster
- McMurrich's anemone
- McPeak anemone
- Meagre miter
- Measled cowrie
- Mechanical shrimp
- Median dipperclam
- Mediterranean acorn worm
- Mediterranean awning clam
- Mediterranean boxer shrimp
- Mediterranean branching placozoan
- Mediterranean cerianthid
- Mediterranean crab
- Mediterranean feather star
- Mediterranean flabellina
- Mediterranean geryon
- Mediterranean macoma
- Mediterranean mermaid's glove
- Mediterranean monk seal
- Mediterranean mud shrimp
- Mediterranean mussel
- Mediterranean orange polyclad worm
- Mediterranean ormer
- Mediterranean purple seastar
- Mediterranean rock shrimp
- Mediterranean sea-fingers
- Mediterranean seawasp
- Mediterranean shore crab
- Mediterranean Slipper Lobster
- Mediterranean stenetrium
- Medusa shrimp
- Medusa spaghetti worm
- Medusa worm
- Megalops shrimp
- Megodon oyster
- Melancholy cranch squid
- Melanoid moon snail
- Melibe
- Melon-headed whale
- Melonesian turrid
- Mera macoma
- Mera-like Macoma
- Mermaid's glove
- Mermaid's veil
- Mertens' chiton
- Mertens' sea anemone
- Merulina Coral
- Mesh-pitted chiton
- Meshed costate beania
- Meshed spine-less beania
- Mesoplodon
- Messi's Brachiopod
- Messor's shore crab
- Messorius murex
- Meta keyhole limpet
- Metallic isopod
- Methane ice worm
- Mexican cockle
- Mexican fiddler
- Mexican four-eyed octopus
- Mexican geoduck
- Mexican jewel box
- Mexican longbeak
- Mexican spider crab
- Mexican turbo snail
- Mexichromis
- Meyendorff's coral shell
- Miami toothshell
- Michael's chromodoris
- Michael's hallaxa
- Mickey mouse squid
- Micromussa coral
- Microporous coral
- Midas ear cassidula
- Middendorff macoma
- Middle shrimp
- Midsize squid
- Miers shrimp
- Mignonette red tree coral
- Mildred's scallop
- Miliaris cowrie
- Military phidiana
- Milk conch
- Milk moonsnail
- Milk-white ribbon worm
- Milky fiddler crab
- Milky jewelbox
- Milky nemertean
- Milky scaleworm
- Milky turretsnail
- Milky venus
- Milleped spider conch
- Miller hydractinia
- Miller's Nembrotha
- Miller's sea urchin
- Millet crab
- Millipede worm
- Mimic dorid
- Mimic tryonia
- Mimic worm
- Mimika bobtail squid
- Mini carpet anemone
- Miniature aeolis
- Miniature ark
- Miniature lucine
- Miniature melo
- Miniature moonsnail
- Miniature nassa
- Miniature spinyhead
- Miniature trumpet triton
- Mining shrimp
- Mino nylon shrimp
- Minor jackknife
- Minor notodoris
- Minor rocksnail
- Minor snapping shrimp
- Minstrel shrimp
- Mint-sauce worm
- Minute axinopsid
- Minute Caecum
- Minute dwarf olive
- Minute feather-duster
- Minute fileclam
- Minute hydrobe
- Minute limops
- Minute nucinellid
- Minute nutclam
- Minute turton
- Miraculous cowry
- Miraculous mitre
- Miraculous pedipes
- Miraculous scallop
- Miran Bullia
- Misaki balloon aeolis
- Miser dove shell
- Mississippi diamondback terrapin
- Mistaken cowrie
- Mitchell's wentletrap
- Miter pyram
- Miter-shaped lyria
- Miterlike cone
- Mithrax
- Mitre shell
- Mitre squid
- Mitten lobsterette
- Mixed rock shrimp
- Modest admete
- Modest alderia
- Modest cadlina
- Modest mitre
- Modest spindle
- Modulus
- Moelleria
- Moerch's cingula
- Mogi velvet shrimp
- Mola rock crab
- Molarless crestleg crab
- Mole cowrie
- Mole shrimp
- Moloka'i leather coral
- Molokaʻi cauliflower coral
- Molucca cone
- Momo coral
- Monaco cleaner shrimp
- Monasteria microporous coral
- Money cowrie
- Money wentletrap
- Monodon murex
- Monogram isopod
- Monster cowrie
- Montacuta
- Montagu's crab
- Montagu's sea slug
- Montagu's stellate barnacle
- Montastrea coral
- Monterey barrel-bubble
- Monterey dwarf-mussel
- Monterey eulima
- Monterey false spindle
- Monterey isopod
- Monterey piddock
- Monterey risso
- Monterey sea cucumber
- Monterey sea lemon
- Monterey tegula
- Monterey wentletrap
- Monterey wormsnail
- Monterey yoldia
- Monterosato's auger
- Montipora
- Montrouzier's thorunna
- Moon octopus
- Moon snail
- Moon snail hermit
- Moon-faced euselenops
- Moonglow anemone
- Moonshineworm
- Moor moon snail
- Mopalia
- Moreton Bay bug
- Morgan's coral hermit crab
- Morgan's hermit crab
- Moridilla
- Morning star shell
- Morning sun star
- Moroccan cockle
- Morocco moon snail
- Morotoge shrimp
- Morra daphnelle
- Morro Bay aeolid
- Morsel macoma
- Morula
- Morum
- Morus cerith
- Mosaic drop-arm octopus
- Mosaic pleurobranch
- Mosaic reef crab
- Mosaic sand star
- Mosaic sea jelly
- Mosaic sea snake
- Mosaic tun
- Moseley's fan coral
- Moseley's flatworm
- Moseley's sea cucumber
- Moseleya coral
- Moss crab
- Mossy ark
- Mossy chiton
- Mossy scallop
- Mottled brittlestar
- Mottled crab
- Mottled encrusting tunicate
- Mottled horny sponge
- Mottled linckia
- Mottled miter
- Mottled pale sea lemon
- Mottled pea crab
- Mottled purse crab
- Mottled red chiton
- Mottled ribbon worm
- Mottled sea cucumber
- Mottled sea hare
- Mottled sea star
- Mottled shore crab
- Mottled snapping prawn
- Mottled social tunicate
- Mottled star
- Mottled topsnail
- Mottled trifora
- Mottled tube maker
- Mottled wentletrap
- Mouac's hypselodoris
- Mound crab
- Mounded nipple horny sponge
- Mountainous star coral
- Mournful limpet
- Mouse cone
- Mouse cowry
- Mouse keyhole limpet
- Mouse-eared snail
- Mouthless land crab
- Moyebi shrimp
- Much-compressed montacutid
- Mud creeper
- Mud dragon
- Mud dwelling thread worm
- Mud ivory whelk
- Mud lancelet
- Mud lobster
- Mud mantis
- Mud nemertean
- Mud sagartia
- Mud scallop
- Mud shrimp
- Mud snail
- Mud spiny lobster
- Mud volcano worm
- Mud whelk
- Mud worm
- Mud-dwelling mactra
- Mudflat fiddler
- Mudflat snapping shrimp
- Mudflat visored shrimp
- Mulberry horny sponge
- Mulberry shell
- Mulberry whelk
- Müller's cirroctopod
- Mulliner's dorid
- Multi-branched porcupine-worm
- Multi-opercular tongue worm
- Multi-pronged scaleworm
- Multi-pustuled mexichromis
- Multicolor frond-aeolis
- Multicolor tunicate
- Multicoloured sea fan
- Multicoloured topshell
- Multihued chiton
- Multiringed chiton
- Murdoch blade shrimp
- Murex
- Muricate frog crab
- Muricea
- Muriceopsis
- Murray's cirroctopod
- Murray's sea cucumber
- Murray's sea pen
- Muscular fusiform sea cucumber
- Musculus
- Mushroom anemone
- Mushroom cap jellyfish
- Mushroom coral
- Mushroom coral ghost shrimp
- Mushroom sea squirt
- Mushroom sidegill
- Mushroom tunicate
- Music cone
- Music volute
- Musical drupe
- Musical furry lobster
- Musky octopus
- Mussel pyramid shell
- Mussel redworm
- Mussel worm
- Mustard branched coral
- Mustard hill coral
- Mutable conch
- Mutable mussel
- Muted tritonia
- Mya cleftclam
- Myadora
- Mycedium
- Mycedium coral
- Myonera
- Myron
- Myrtea
- Mysella
- Mysid
- Mystacocarid
- Mysterious aglaja
- Mysterious bobtail squid
- Nail starfish
- Nail-shaped crepidule
- Naked basket star
- Naked green sea urchin
- Naked solarelle
- Nakedface hairy crab
- Nanaimo footless sea cucumber
- Naples aeolid
- Nares's sea urchin
- Narluga
- Narrow bathyal crab
- Narrow keyhole limpet
- Narrow otter shell
- Narrow periwinkle
- Narrow snapping shrimp
- Narrow tree crab
- Narrow-fingered fiddler crab
- Narrow-fronted fiddler crab
- Narrow-hinge Astarte
- Narrow-leaved hornwrack
- Narrow-legged squat lobster
- Narrow-ridged finless porpoise
- Narrow-slit tuskshell
- Narrowback mud crab
- Narrowfront rubble crab
- Narrowmouth hydrobe
- Narwal shrimp
- Nassa mud shell
- Nassarius
- Natal anemone
- Natal ark
- Natal beach louse
- Natal lightfoot crab
- Natal spiny lobster
- Natica
- Naushion mud shrimp
- Naval shipworm
- Navanax
- Navicular agriodesma
- Neat aeolid
- Neat little top shell
- Neat nassa
- Neat-rib keyhole limpet
- Nebalia
- Nebalia shrimp
- Nebrite cowrie
- Necklace auger
- Necklace cerith
- Necklace cone
- Necklace nassa
- Necklace turris
- Needle cuttlefish
- Needle pyram
- Needle pyramid snail
- Needle shrimp
- Needle snail
- Needle turretsnail
- Needle-spined fragile star
- Needle-spined Urchin
- Needlenose pear crab
- Neglected horsemussel
- Neglected ocellate octopus
- Neighbor tagelus
- Nelson argid
- Nembrotha
- Neon flying squid
- Neon thuridilla
- Neptune Cone
- Neptune lobster
- Neptune rose shrimp
- Neptune whelk
- Neptune's cup sponge
- Neptune's lace
- Neptune's volute
- Nerite
- Nero porostome
- Nesis' narrow squid
- Nesting mussel
- Net coral
- Net fire coral
- Net-foot seahare
- Netted Barrel Sponge
- Netted cone
- Netted dog-whelk
- Netted Flatworm
- Netted glass-scallop
- Netted kellyclam
- Netted moonsnail
- Netted olive
- Network beak shell
- Network lamellaria
- New Caledonia Blackfish
- New Caledonian sea krait
- New Caledonian vayssierea
- New England brine shrimp
- New England Cyclocardia
- New England neptune
- New England wentletrap
- New Zealand amphipod
- New Zealand blue mussel
- New zealand cancer crab
- New zealand crab
- New Zealand fur seal
- New Zealand geoduck clam
- New Zealand heart urchin
- New Zealand lancelet
- New Zealand lobster
- New Zealand moonsnail
- New Zealand mudsnail
- New Zealand pea crab
- New Zealand porcelain crab
- New zealand scallop
- New Zealand sea cucumber
- New Zealand sea lion
- New Zealand sea tulip
- Newcomb pitar
- Newcomb's littorine snail
- Nicobar hairy triton
- Nicobar mactra
- Nicobar spindle
- Nierstrasz's coral
- Night anemone
- Night shrimp
- Night sky nudibranch
- Night-wandering sea cucumber
- Nika shrimp
- Nile topsnail
- Nilenta lobsterette
- Nilsodhner's tritonia
- Nimble spray crab
- Nina's sea cucumber
- Nine-armed sea star
- Nineside toothshell
- Ninetooth pebble crab
- Nipple sponge
- Nippled sea star
- Niso
- Niue sea krait
- Noah's ark
- Noah's giant clam
- Nobilis aeolis
- Noble Admete
- Noble chiton
- Noble Cone
- Noble Feather Star
- Noble frog shell
- Noble giant turrid
- Noble lora
- Noble murex
- Noble necklace-worm
- Noble scallop
- Noble vertagus
- Noble volute
- Noble wentletrap
- Nodding hydroid
- Nodose box crab
- Nodose clinging crab
- Nodose purpura
- Nodose rock shell
- Nodose rubble crab
- Nodular ark
- Nodulated rock shell
- Noduled sundial
- Nodulose hoplodoris
- Nodulose lobster shrimp
- Nodulous aeolid
- Nomura's hermit crab
- Nomura's jellyfish
- Norris's chromodorid
- Norris's top snail
- North Atlantic cup sponge
- North Atlantic fin whale
- North Atlantic harbor porpoise
- North Atlantic humpback whale
- North Atlantic long-finned pilot whale
- North Atlantic minke whale
- North Atlantic octopus
- North Atlantic right whale
- North Pacific austroneaera
- North Pacific bigeye octopus
- North Pacific bobtail squid
- North Pacific fin whale
- North Pacific humpback whale
- North Pacific minke whale
- North Pacific right whale
- North Pole sea anemone
- North Sea cerianthid
- Northeast lucine
- Northern admete
- Northern ambereye
- Northern basket star
- Northern big-eyed sandhopper
- Northern bittersweet
- Northern blind limpet
- Northern blue whale
- Northern blunt-tail shrimp
- Northern bottlenose whale
- Northern brown shrimp
- Northern cerianthid
- Northern club coral
- Northern coastal shrimp
- Northern compact wormsnail
- Northern cranch squid
- Northern cyclocardia
- Northern diamondback terrapin
- Northern dwarf cockle
- Northern dwarf-tellin
- Northern elephant seal
- Northern emarginula
- Northern feather star
- Northern feather-duster worm
- Northern fur seal
- Northern fusiform sea cucumber
- Northern hairy chiton
- Northern hooded shrimp
- Northern Indian Ocean blue whale
- Northern kelp crab
- Northern krill
- Northern lacuna
- Northern lamp shell
- Northern lemon rock crab
- Northern longbeak
- Northern lucina
- Northern mangrove sea snake
- Northern mantis shrimp
- Northern mauxia shrimp
- Northern mole glistenworm
- Northern moon snail
- Northern neptune
- Northern nutclam
- Northern nylon shrimp
- Northern Pacific sea star
- Northern propellerclam
- Northern pygmy squid
- Northern red chiton
- Northern right whale dolphin
- Northern river terrapin
- Northern rock barnacle
- Northern rough shrimp
- Northern rough wentletrap
- Northern sand star
- Northern scarlet star
- Northern sea fan
- Northern sea nettle
- Northern sea otter
- Northern sea pork
- Northern sei whale
- Northern shortfin squid
- Northern shrimp
- Northern smooth shore crab
- Northern spined chiton
- Northern spinyhead
- Northern staghorn bryozoan
- Northern star coral
- Northern striped dogwinkle
- Northern sun star
- Northern thracia
- Northern velvet shrimp
- Northern white crust
- Northern white shrimp
- Northern wormsnail
- Northern yoldia
- Northwest lobster
- Northwest onchidella
- Norway king crab
- Norway shipworm
- Norway whelk
- Norwegian egg cockle
- Norwegian shrimp
- Notched brittle star
- Notched rock shrimp
- Notched sand dollar
- Notched tidal rock shrimp
- Notodoris
- Noumea
- Nucleus cowrie
- Nucleus scallop
- Nudibranch
- Nudibranch-mimicking amphipod
- Nussatella cone
- Nut clam
- Nut diplodon
- Nut mitre
- Nut semele
- Nut shell
- Nut whelk
- Nutmeg melongena
- Nutmeg shell
- Nuttall cockle
- Nuttall lucine
- Nutting's snapping shrimp
- Nutting's sponge
- Nylon shell
- Nymph snapping shrimp
- Oak cone
- Obelia
- Obelisk vertagus
- Obese cone
- Obese dipperclam
- Obese Henricia
- Oblique ark shell
- Oblique lamellaria
- Oblique smoothcockle
- Oblique whelk
- Oblique yoldia
- Oblique-lined yoldia
- Oblong egg cockle
- Oblong odostomia
- Oblong otter shell
- Oblong venus
- Obscure cone
- Obscure Corambe
- Obscure cushion star
- Obscure dwarf triton
- Obscure glassy-bubble
- Obscure Hypselodoris
- Obscure solarelle
- Obsolete Chromodoris
- Obtuse berry snail
- Obtuse horn shell
- Ocarina wing shell
- Ocean quahog
- Ocean shrimp
- Oceanic cranch squid
- Oceanic scud
- Oceanic squid
- Ocellate lady crab
- Ocellate phyllidia
- Ocellate seastar
- Ocellate swimming crab
- Ocellated box crab
- Ocellated coral
- Ocellated sea cucumber
- Ocellated sea hare
- Ocellated tozeuma shrimp
- Ochre sea star
- Octagon murex
- Octamerous anemone
- Octangular tusk shell
- Octaradiate stalked jellyfish
- Octopus coral
- Octopus squid
- Octopus starfish
- Ocular coral
- Oculate apple murex
- Odd bobtail
- Odd rayed star
- Odostomia
- Oersted's brittle star
- Offshore blade shrimp
- Offshore horse mussel
- Offshore killer whale
- Offshore lebbeid
- Oily tun
- Okenia
- Okhotsk lebbeid
- Okhotsk ringed seal
- Okhotsk whelk
- Okinawa Gymnodoris
- Old cardita
- Old woman octopus
- Oldroyd coralsnail
- Oldroyd penshell
- Olivaceous nassa
- Olive ark
- Olive green cockle
- Olive green wart anemone
- Olive margarite
- Olive nerite
- Olive ridley sea turtle
- Olive sea snake
- Olive shell
- Olive snapping shrimp
- Olive tambja
- Olive-gray ancilla
- Olive-headed sea snake
- Olive-shaped mitre
- Olivepit porcelain crab
- Olivia's sapsucker
- Olmec fiddler
- Olympia oyster
- Oman cuttlefish
- Omaria cone
- Ombango deep-sea shrimp
- Omura's whale
- One armed jellyfish
- One-band lacuna
- One-band wentletrap
- One-groove pedipes
- One-horned spider crab
- One-tooth simnia
- One-toothed odostomia
- One-zoned turris
- Onyx cowrie
- Onyx slippersnail
- Oolitic fusiform sea cucumber
- Opal jewel topsnail
- Opal worm
- Opalescent inshore squid
- Open brain coral
- Open simnia
- Open-mouthed ancilla
- Open-mouthed purple
- Operculate mud shrimp
- Operculate sanguin
- Ophioderma
- Orange anemone
- Orange ascidian
- Orange ball anemone
- Orange ball sponge
- Orange barnacle crust sponge
- Orange blob
- Orange bomber
- Orange boring sponge
- Orange button sea slug
- Orange clubbed sea slug
- Orange compound tunicate
- Orange cookie star
- Orange cushion star
- Orange decameric anemone
- Orange deep water fan
- Orange deep-water anemone
- Orange doris
- Orange dragon slug
- Orange elephant ear sponge
- Orange encrusting bryozoan
- Orange feather-duster
- Orange fiddler crab
- Orange finger sponge
- Orange flake ascidian
- Orange frond sponge
- Orange godiva
- Orange gorgonian
- Orange gumdrop
- Orange hairy hermit
- Orange hingebeak
- Orange hoofsnail
- Orange hydroid
- Orange Icing Sponge
- Orange keyhole sponge
- Orange knobby star
- Orange lattice ascidian
- Orange lights seasquirt
- Orange lumpy encrusting sponge
- Orange mantis shrimp
- Orange marginella
- Orange mitre
- Orange mud crab
- Orange peel bryozoan
- Orange pipe sponge
- Orange reticulated polyp star
- Orange ribbon worm
- Orange rough ball
- Orange sand star
- Orange sea cucumber
- Orange sea fan
- Orange sea fan black coral
- Orange sea grapes
- Orange sea pen
- Orange sheath tunicate
- Orange shrimp
- Orange signaller crab
- Orange spider conch
- Orange spiny sea rod
- Orange sponge
- Orange Spot Mantis Shrimp
- Orange spotted ballerina
- Orange spotted Gymnodoris
- Orange stony coral
- Orange sun star
- Orange telesto
- Orange thread-gilled worm
- Orange tonicia
- Orange tree coral
- Orange trumpet sponge
- Orange tubular ascidian
- Orange veined encrusting sponge
- Orange wall-sponge
- Orange whelk
- Orange zoanthid
- Orange-band marginella
- Orange-barred mexichromis
- Orange-brown aeolid
- Orange-claw marsh crab
- Orange-clawed Fiddler Crab
- Orange-face Cuthona
- Orange-footed sea cucumber
- Orange-mouth olive
- Orange-peel doris
- Orange-pink sea urchin
- Orange-red encrusting sponge
- Orange-rib drillia
- Orange-spike polycera
- Orange-striped green anemone
- Orange-tip cuthona
- Orange-tipped sea gooseberry
- Orange-tipped sea squirt
- Orangeback squid
- Orangeclaw hermit
- Orangetail snapping shrimp
- Orangutan crab
- Orb carnation coral
- Orb diplodon
- Orbicular axinopsid
- Orbigny's fossarus
- Orbit cockle
- Orcutt nakedclam
- Oregon armhook squid
- Oregon triton
- Organ pipe coral
- Organ-pipe sponge
- Oriental angel wing
- Oriental cyclina
- Oriental narwal shrimp
- Oriental polybranchia
- Oriental prawn
- Oriental sea slug
- Oriental shrimp
- Oriental spear lobster
- Oriental squat lobster
- Ornamental horny sponge
- Ornamented boxcrab
- Ornamented spindle
- Ornate auger
- Ornate austraeolis
- Ornate batwing slug
- Ornate cadlinella
- Ornate cardiomya
- Ornate cup coral
- Ornate cuttlefish
- Ornate dermatobranchus
- Ornate diamondback terrapin
- Ornate elysia
- Ornate fiddler crab
- Ornate flabellina
- Ornate hunchback barnacle
- Ornate limpet
- Ornate lodderena
- Ornate pitar venus
- Ornate porcelain crab
- Ornate reef sea snake
- Ornate scallop
- Ornate spiny lobster
- Ornate topshell
- Ornate tube worm
- Ornate verticord
- Ornate worm
- Ortea's Cyerce
- Ortmann's hermit crab
- Ortmann's striped shrimp
- Osa fiddler crab
- Ostergaard's cowry
- Ostracod
- Ostrich egg sponge
- Ostrich plume hydroid
- Outer-hermit sea anemone
- Oval abalone
- Oval blade shrimp
- Oval bubble snail
- Oval cup coral
- Oval dwarf-venus
- Oval macoma
- Oval mushroom coral
- Oval sea gooseberry
- Oval spoonclam
- Oval sportella
- Oval surf clam
- Oval tellin
- Oval trough shell
- Oval urn crab
- Oval varicorbula
- Oval yoldia
- Ovalbone cuttlefish
- Ovate barrel-bubble
- Ovate clam
- Ovate cyclocardia
- Ovate dovesnail
- Ovate gastrochaenid
- Ovate mysella
- Ovate poromya
- Ovate tuskshell
- Overgrowing mat tunicate
- Owl limpet
- Oxheart cockle
- Oxpalate nerite
- Oyama's frog shell
- Oyster dovesnail
- Oyster drill
- Oyster mudworm
- Oyster pea crab
- Oyster piddock
- Oyster redworm
- Oyster turrid
- Oystershell mud crab
- Pachyseris
- Pacific aclis
- Pacific acorn barnacle
- Pacific ambereye
- Pacific ancula
- Pacific asaphis
- Pacific awningclam
- Pacific bean donax
- Pacific bearded seal
- Pacific blood star
- Pacific blue snail
- Pacific bobtail squid
- Pacific calico scallop
- Pacific carrier crab
- Pacific cask shell
- Pacific Chinese hat
- Pacific clam
- Pacific coast angel wing
- Pacific crassinella
- Pacific deer cowrie
- Pacific duckclam
- Pacific eggcockle
- Pacific elkhorn coral
- Pacific false-bean
- Pacific flowerbud coral
- Pacific fourhorn octopus
- Pacific gaper clam
- Pacific glass shrimp
- Pacific glassy-mussel
- Pacific golden crab
- Pacific goose barnacle
- Pacific grass shrimp
- Pacific hairback fiddler crab
- Pacific half cockle
- Pacific half-slippersnail
- Pacific harbor porpoise
- Pacific harbor seal
- Pacific heart urchin
- Pacific krill
- Pacific littleneck clam
- Pacific lobsterette
- Pacific lyre crab
- Pacific melongena
- Pacific mole crab
- Pacific moon jelly
- Pacific mottled shore crab
- Pacific mud-piddock
- Pacific neopolitan lugworm
- Pacific nut sheath bubble
- Pacific oyster
- Pacific partridge tun
- Pacific pearl oyster
- Pacific pelagic water strider
- Pacific pincer lobster
- Pacific plate limpet
- Pacific psammonworm
- Pacific razor clam
- Pacific red hermit crab
- Pacific red pinchbug
- Pacific red tree coral
- Pacific rock crab
- Pacific rosy limpet
- Pacific sea gooseberry
- Pacific sea lemon
- Pacific sea nettle
- Pacific sea peach
- Pacific sea star
- Pacific seabob
- Pacific simnia
- Pacific sphenia
- Pacific spiny brittlestar
- Pacific stomach wing
- Pacific strawberry cockle
- Pacific sugar limpet
- Pacific thecacera
- Pacific thorny oyster
- Pacific tiger lucine
- Pacific tree coral
- Pacific walrus
- Pacific white crust
- Pacific white-sided dolphin
- Pacific wing oyster
- Pacific yellow cockle
- Paddington bear crab
- Paddle crab
- Paddle worm
- Paddle-spined seastar
- Padina seahare
- Pagoda coral
- Pagoda latiaxis
- Pagoda prickly-winkle
- Pagoda shell
- Painted balloon aeolis
- Painted eggcockle
- Painted elysia
- Painted false stomatella
- Painted ghost crab
- Painted hermit crab
- Painted lady
- Painted limpet
- Painted nudibranch
- Painted pebble crab
- Painted porcelain crab
- Painted puncturella
- Painted shrimp
- Painted spindle
- Painted spiny lobster
- Painted sunset clam
- Painted terrapin
- Painted thecacera
- Painted top shell
- Painted tunicate
- Painted whelk
- Paintpot cuttlefish
- Palate tellin
- Palau nautilus
- Pale anemone
- Pale anemone hermit
- Pale chelidonura
- Pale creeping pedal sea cucumber
- Pale goblet
- Pale janthina
- Pale lacuna
- Pale lucina
- Pale margin shell
- Pale moonsnail
- Pale mushroom compound tunicate
- Pale octopus
- Pale polybranchia
- Pale sea cucumber
- Pale sea urchin
- Pale sponge shrimp
- Pale star
- Pale zigzag cowry
- Pali nudibranch
- Palla's wentletrap
- Pallid carrier-shell
- Pallid ghost crab
- Pallid Glossodoris
- Pallid marginella
- Pallisade cone
- Palm bamboo coral
- Palm beach macromphaline
- Palmate hermit crab
- Palmate octopus
- Palmate oyster
- Palmer's Eunicea
- Palolo worm
- Palythoa
- Panacca clam
- Panama armoured shrimp
- Panama brief squid
- Panama mantis shrimp
- Panama nylon shrimp
- Panama rainbow top shell
- Panama sea cucumber
- Panama's sapsucker
- Panamaic vitularia
- Panamanian fiddler crab
- Panamic arrow crab
- Panamic cushion sea star
- Panamic limops
- Panamic snapping shrimp
- Panamic spidercrab
- Panamic spindle-bubble
- Pancake star coral
- Pancake urchin
- Panda mantis shrimp
- Pandora
- Panning's blackfish
- Pansy shell
- Panther cowrie
- Panther jorunna
- Pantropical spotted dolphin
- Papal mitre
- Paper bubble
- Paper cockle
- Paper melibe
- Paper moon scallop
- Paper scallop
- Paper spoonclam
- Paper tellin
- Paper thracia
- Papery burnupena
- Papery rapa
- Papery stomatella
- Papilla moon snail
- Papillate pleurobranch
- Papilliferous horny sponge
- Papillose cup coral
- Papillose elysia
- Papillous worm
- Papua shrimp
- Papuan cuttlefish
- Paradox top
- Paradox worm
- Parasitic anemone
- Parasitic scalesnail
- Parasitic sea anemone
- Parasol bryozoan
- Parasol feather-duster
- Parasol urchin
- Parchment worm
- Parker's mangelid
- Paroan discodoris
- Paromola
- Paron shrimp
- Parrot shrimp
- Partly-sculptured crenella
- Partner shrimp
- Passionate carnation coral
- Passionflower starfish
- Paste shrimp
- Pastel odontodactylid mantis shrimp
- Patagonian geitodoris
- Patagonian giant octopus
- Patagonian hermit crab
- Patagonian lobsterette
- Patagonian mantis shrimp
- Patagonian rock sea cucumber
- Patagonian scallop
- Patagonian squid
- Patchwork cuttlefish
- Patriarchal mitre
- Patulous black coral
- Paua
- Paua spider crab
- Paula's cone
- Paved clinging crab
- Pavilion horny sponge
- Pavona coral
- Paxillose crab
- Payer's shrimp
- Pea crab
- Pea strigilla
- Peach seaslug
- Peach-coloured compound tunicate
- Peachball sponge
- Peacock coral
- Peacock cranch squid
- Peacock worm
- Peaked shrimp
- Peale's dolphin
- Peanut rock shrimp
- Peanut sea squirt
- Peanut worm
- Pear cowrie
- Pear limpet
- Pear marginella
- Pear melongena
- Pear simnia
- Pear triton
- Pear whelk
- Pear-shaped coral shell
- Pear-shaped cowrie
- Pear-shaped horny sponge
- Pear-shaped moon snail
- Pearl bubble coral
- Pearl cowry
- Pearl oyster shrimp
- Pearl-topped calcareous tubeworm
- Pearl-topped calcareous worm
- Pearly entodesma
- Pearly jewel squid
- Pearly lyonsia
- Pearly red encrusting bryozoan
- Pearly sea anemone
- Pebble crab
- Pebbly star
- Pectinate cardiomya
- Pectinia
- Peculiar doriopsilla
- Pedersen's peppermint shrimp
- Pederson cleaner shrimp
- Pedicillate fragile star
- Pedunculate clathrina
- Peeled potato sponge
- Pelagic clam worm
- Pelagic red crab
- Pelagic swimcrab
- Pele's murex
- Pelican's foot
- Pellucid aeolis
- Pellucid cerith
- Pellucid mactra
- Pellucid murex
- Pellucid pitar venus
- Pen shell
- Pencil bait
- Pencil coral
- Pencil sea urchin
- Pencil-spine eulima
- Penciled dovesnail
- Pendant murex
- Penguin wing oyster
- Penicillate jellyfish
- Penis worm
- Pennant's nut crab
- Pennant's top shell
- Pennsylvania lucine
- Pentagonal porcelain crab
- Pentagonal sand star
- Pentagonal tooth-star
- Pentamerous sea cucumber
- Pepper and salt slug
- Peppered sea cucumber
- Peppermint sea star
- Peppermint shrimp
- Peppermint swimcrab
- Peppery furrow
- Peregrine crab
- Peregrine shrimp
- Perfect tellin
- Perforated auger
- Perforated bubble-shell
- Perforating worm
- Periscope crab
- Periscope erycina
- Periscope shrimp
- Perlemoen abalone
- Perna
- Perna tellin
- Peron's sea butterfly
- Péron's sea cucumber
- Peron's sea snake
- Perplexed wentletrap
- Perplexing digidentis
- Perrier's sea cucumber
- Perrin's beaked whale
- Persian carpet flatworm
- Persian conch
- Persian Gulf sea snake
- Persian horse conch
- Persian purpura
- Persian sand dollar
- Peruvian calico scallop
- Peruvian conch
- Peruvian dusky dolphin
- Peruvian jingle
- Peruvian one-handed shrimp
- Peruvian violet crab
- Peruvian yellow clam
- Perverse whelk
- Petaled petalifera
- Peters' sea snake
- Peters's sea urchin
- Petit slime-tube feather-duster
- Petroglyph shrimp
- Pfeffer's enope squid
- Pfeffer's firefly squid
- Pfeiffer's hairy triton
- Pharaoh cuttlefish
- Pheasant shell
- Pheasant-tail hydroid
- Phestilla
- Phidiana
- Philbert's gibbula
- Philine
- Philinopsis
- Philip velvet shrimp
- Philippi's limpet
- Philippi's spindle
- Philippi's star shell
- Philippine cone
- Philippine flying squid
- Philippine horse mussel
- Philippine mantis shrimp
- Philippine mitre
- Philippine octopus
- Philippines hooded oyster
- Phoenician whelk
- Phoenix aeolid
- Phos
- Phosphorescent sea pen
- Phyllidia
- Phyllidiella
- Phyllidiopsis
- Phyllodesmium
- Picacho barnacle
- Picken's dorid
- Picken's tritonid
- Pictorial sundial
- Pictured Rove Beetle
- Piddock
- Pie crust crab
- Pierre's armina
- Pig's snout volute
- Pigbutt worm
- Pigeon conch
- Pigeon erato
- Piglet squid
- Pigmy sea cucumber
- Pill ark
- Pillar coral
- Pillar thraciid
- Pillow barrel-bubble
- Pillow coral
- Pillow-like tunicate
- Pilose bittersweet
- Pilose porcelain crab
- Pilsbry canoe-bubble
- Pilsbry piddock
- Pilsbry tuskshell
- Pilsbry's Latiaxis
- Pilsbry's macromphaline
- Pilsbry's Philinopsis
- Pilumnus
- Pimpled Abalone
- Pimpled aeolid
- Pimpled basket shell
- Pimpled diplodon
- Pimpled sea squirt
- Pin-head squirt
- Pinch bug
- Pinch-kipped marginella
- Pinched ark
- Pincushion star
- Pine cone marble shrimp
- Pine coral
- Pineapple calcareous sponge
- Pineapple coral
- Pink abalone
- Pink allied cowrie
- Pink and red encrusting sponge
- Pink Barnacle
- Pink beach hopper
- Pink blind lobster
- Pink branching hydrocoral
- Pink branching lace hydrocoral
- Pink bubblegum coral
- Pink clonal anemone
- Pink coryphella
- Pink crested star
- Pink cucumber
- Pink cuttlefish
- Pink doris
- Pink drupe
- Pink flatworm
- Pink floyd pistol shrimp
- Pink geryon
- Pink Ghost Crab
- Pink ghost shrimp
- Pink glass shrimp
- Pink gorgonian
- Pink helmet
- Pink hermit crab
- Pink limpet
- Pink Lumpy Sponge
- Pink mangrove lobster
- Pink meanie
- Pink parasitic flatworm
- Pink parasitic isopod
- Pink purse crab
- Pink sea fan
- Pink sea fingers
- Pink sea urchin
- Pink slipper comb jelly
- Pink soft coral
- Pink spiny lobster
- Pink sponge
- Pink spotted jacket tonicia
- Pink sunset shell
- Pink telja
- Pink tellin
- Pink tower shell
- Pink trivia
- Pink tube sponge
- Pink Vase Sponge
- Pink velvet shrimp
- Pink Volcano Barnacle
- Pink-and-white fingered vinegar crab
- Pink-clawed Fiddler Crab
- Pink-eared Mantis Shrimp
- Pink-fingered vinegar crab
- Pink-fronted ribbon worm
- Pink-lipped topshell
- Pink-mouth ovula
- Pink-mouthed murex
- Pink-rayed limpet
- Pink-spotted auger
- Pink-spotted razor shell
- Pink-tip Acropora
- Pinkfish sea cucumber
- Pinkish topsnail
- Pinkmouth hydroid
- Pinna shrimp
- Pinnate murex
- Pinnate spiny sea fan
- Pinnated spionid
- Pinpoint Cone
- Pinpricked mussel
- Pinto abalone
- Pinto shrimp
- Pipe-cleaner brittlestar
- Pipecleaner sponge
- Pipek's Phyllidiopsis
- Pipi
- Pirie's egg cowrie
- Pisania
- Pismo clam
- Pit lucine
- Pitar
- Pitch-black horny sponge
- Pitcher olive
- Pitchy nerite
- Pitho
- Pitted baby-bubble
- Pitted miter
- Pitted murex
- Pitted nudibranch
- Pitted Sponge
- Pitted wentletrap
- Piure
- Placida
- Plagusia
- Plain sea snake
- Plain tellin
- Plain troughshell
- Plain-body octopus
- Plain-nosed shrimp
- Plain-spot octopus
- Plaited miter
- Plakobranchus
- Planar hydroid
- Planar sea cucumber
- Planate abalone
- Planaxis
- Plankton worm
- Planktonic Amphipod
- Planktonic sportellid
- Planorbid pteropod
- Plant limpet
- Plastic carbasea
- Plate Acropora
- Plate coral
- Plate limpet
- Plate mysella
- Plating Acropora
- Platter sea cucumber
- Platydoris
- Pleasant Chelidonura
- Pleasing pitar
- Pleated plough shell
- Pleated rock crab
- Pleated sea squirt
- Pleated whelk
- Plebeian tritonia
- Plerogyra coral
- Plica scallop
- Plicate Caecum
- Plicate conch
- Plicate hornsnail
- Plicate kitten's paw
- Plicate mangelia
- Plicate nerite
- Plicate venus
- Plum-like ascidia
- Plume hydroid
- Plumed hairy crab
- Plumed hydroid
- Plumose anemone
- Plump cyphoma
- Plump Sea Cucumber
- Plump whelk
- Pod tree oyster
- Podded hydroid
- Poindimie's Phyllodesmium
- Pointed ancilla
- Pointed cingula
- Pointed clam
- Pointed Crassinella
- Pointed macoma
- Pointed nut clam
- Pointed Pencil Coral
- Pointed venus
- Poison ocellate octopus
- Poisson swimming crab
- Poker chip venus
- Poker star montipora
- Polar Astarte
- Polar lebbeid
- Polar margarite
- Polar six rayed star
- Polar whelk
- Poli's Stellate Barnacle
- Polished barrel-bubble
- Polished mactra
- Polished mantis shrimp
- Polished marginella
- Polished moonsnail
- Polished nerite
- Polished papermussel
- Polished wentletrap
- Polite marginella
- Polka-dot bubble shell
- Polka-dot chromodorid
- Polka-dot nudibranch
- Polkadotted hermit
- Polkadotted pea crab
- Pollack louse
- Polydora mud worm
- Polynesian furrow lobster
- Polynesian golden crab
- Polynesian grapsid crab
- Polyp aeolis
- Pom pom xenia
- Pom-pom anemone
- Pom-pom taringa
- Pomegranate aeolid
- Pompeii worm
- Ponape rainbow acro
- Pond shrimp
- Ponderous ark
- Ponderous Dosinia
- Ponderous horny sponge
- Pontifical miter
- Poor mitre
- Poorly ribbed cockle
- Pop-eye chiroteuthid squid
- Porcelain anemone crab
- Porcelain auger
- Porcelain coral
- Porcelain crab
- Porcelain fiddler crab
- Porcupine crab
- Porcupine sakuraeolis
- Porcupine shrimp
- Porites
- Poritipora coral
- Pork scratching sponge
- Porous cowry
- Porous cup coral
- Porous False Plexaura
- Porous leaf coral
- Porous lettuce coral
- Porous sea rod
- Porous star coral
- Port Darwin sea snake
- Porter crab
- Porter's chromodorid
- Porter's cowrie
- Portly spider crab
- Portobelo chiton
- Portuguese oyster
- Posidonia prawn
- Possjet lebbeid
- Potato crisp bryozoan
- Potato sponge
- Potitinga prawn
- Poulsen's triton
- Pourtales abalone
- Pourtales fan coral
- Pourtales glass-scallop
- Pourtalès's glass sponge
- Pourtalès's lace hydrocoral
- Powis tibia
- Pram bug
- Precious auger
- Precious Cardiomya
- Precious Chromodoris
- Precious stone shell
- Precious wentletrap
- Predaceous aeolis
- Predatory tunicate
- Prelate cone
- Pretty cave coral
- Pretty hermit crab
- Pretty jewelbox
- Pretty liomera
- Pretty pheasant shell
- Pretty sea cradle
- Pribilof hermit
- Pribilof whelk
- Prickly anemone
- Prickly cushion star
- Prickly deep-sea lobster
- Prickly jingle
- Prickly limpet
- Prickly lobsterette
- Prickly mud crab
- Prickly octopus
- Prickly Pacific drupe
- Prickly pen shell
- Prickly redfish
- Prickly rock shell
- Prickly scallop
- Prickly sea whip
- Prickly spider crab
- Prickly whelk
- Prickly-pored coral
- Pricklywinkle
- Prideaux's hermit crab
- Prime Dermatobranchus
- Prince cowrie
- Prince horse conch
- Prince murex
- Princely cone
- Princely volute
- Princess marginella
- Princess venus
- Problematic jaw worm
- Proboscisless ribbon worm
- Procarid shrimp
- Processa shrimp
- Projecting turritella
- Projecting venus
- Prolific coral
- Prolific three-section tubeworm
- Pronghorn decorator crab
- Pronghorn spiny lobster
- Propeller ark
- Protected calcareous sponge
- Proteus' rock barnacle
- Psammocora
- Pseudo strawberry tunicate
- Pseudo-stalked barnacle
- Pseudo-white sea cucumber
- Psyche topsnail
- Psychedelic batwing slug
- Pteropods
- Pubescent porcelain crab
- Pubescent thracia
- Puerto Rican sand crab
- Puerto Rico shipworm
- Puff-ball snail
- Puffy mud crab
- Puget coastal shrimp
- Puget pea crab
- Puget Sound king crab
- Pugnaceous aeolis
- Pukusi franciscana
- Pulse coral
- Punched stone crab
- Punctate blade shrimp
- Punctate donax
- Punctate dove shell
- Punctate keyhole limpet
- Punctate lucine
- Punctate mangelia
- Punctate pandora
- Puny elysiella
- Pupa halistyle
- Pure mysella
- Pure plough shell
- Pure tellin
- Purple Acropora coral
- Purple alvania
- Purple amiantis
- Purple and cream shore crab
- Purple barnacle
- Purple bristle crab
- Purple brittle star
- Purple bullseye
- Purple butter clam
- Purple clanculus
- Purple climber crab
- Purple cockle
- Purple colonial tunicate
- Purple cone
- Purple coral shell
- Purple deep-sea shrimp
- Purple dwarf olive
- Purple dwarf-venus
- Purple dye murex
- Purple encrusting bryozoan
- Purple fiddler
- Purple fiddler crab
- Purple flamingo tongue
- Purple gorgonian
- Purple heart urchin
- Purple hermit
- Purple Indonesian hermit crab
- Purple land crab
- Purple lettuce coral
- Purple mahogany clam
- Purple mangrove crab
- Purple marsh crab
- Purple moon snail
- Purple mud crab
- Purple mussel
- Purple nana
- Purple noumea
- Purple olive clam
- Purple Pacific drupe
- Purple Pacific sea urchin
- Purple purse-oyster
- Purple ribbon worm
- Purple rice coral
- Purple rock barnacle
- Purple rocksnail
- Purple sea anemone
- Purple sea pansy
- Purple sea plume
- Purple shore crab
- Purple soft coral
- Purple sponge
- Purple stone crab
- Purple sunset shell
- Purple vase sponge
- Purple worm
- Purple-banded brittle star
- Purple-crowned sea goddess
- Purple-footed porcelain crab
- Purple-lined nembrotha
- Purple-lipped dogwhelk
- Purple-mottled shore crab
- Purple-red flabellina
- Purple-ringed top snail
- Purple-spotted hypselodoris
- Purple-spotted nudibranch
- Purple-staining sponge
- Purple-striped jellyfish
- Purple-stub necklace-worm
- Purple-tipped Acropora
- Purpleback flying squid
- Purplehead gamba prawn
- Purplemouth moon snail
- Purplemouth olive
- Purplish bifurcate mussel
- Purplish octopus
- Purplish semele
- Purplish slender chiton
- Purplish tagelus
- Purse calcareous sponge
- Purse frog shell
- Purse sponge
- Pusa aglaja
- Pustuled cowrie
- Pustulose ark
- Pustulose thracia
- Pustulose wart slug
- Puzzling dwarf olive
- Pygmy auger
- Pygmy beaked whale
- Pygmy blue whale
- Pygmy emarginula
- Pygmy eualid
- Pygmy fiddler crab
- Pygmy keeled octopus
- Pygmy killer whale
- Pygmy krill
- Pygmy locust lobster
- Pygmy pelagic octopod
- Pygmy right whale
- Pygmy rock crab
- Pygmy seguenzia
- Pygmy slipper lobster
- Pygmy sperm whale
- Pygmy squid
- Pygmy whelk
- Pygospio worm
- Pyjama nudibranch
- Pyramid clio
- Pyramid top
- Pyramidal prickly-winkle
- Pyramis mitre
- Pyrosome
- Quadrate hairy crab
- Quadrate horn shell
- Quadrate paperbubble
- Quadrate trapezium
- Quadripunctate gribble
- Quayle spinytail
- Quayle's hermit
- Queen conch
- Queen lizard mantis
- Queen marginella
- Queen scallop
- Queen tegula
- Queen venus
- Quill worm
- Quillback spiny crab
- Rabbit doris
- Rabbit-ear barnacle
- Rabbitnose shrimp
- Racer mangrove crab
- Racing stripe flatworm
- Radial purse-oyster
- Radial-ridged corbula
- Radially-ribbed keyhole limpet
- Radians trivia
- Radiant squat lobster
- Radiate limpet
- Radiate top shell
- Radula nerite
- Ragged chalice coral
- Ragged seahare
- Ragworm
- Rainbow crab
- Rainbow shrimp
- Rainbow star
- Rainbow tellin
- Rake tellin
- Ram's horn squid
- Ramari's beaked whale
- Rameous bryozoan
- Ramified fire coral
- Ramose murex
- Ramose sea hare
- Randall's snapping shrimp
- Randolph scallop
- Rang's neritina
- Rapa whelk
- Rapanui octopus
- Rare dog-head triton
- Rare-spined murex
- Rashleigh's cowry
- Rasp coral
- Rasp tagelus
- Rasp tellin
- Raspberry brittle star
- Rat cone
- Rat-tailed fusiform sea cucumber
- Rat-tailed sea cucumber
- Ratchet topsnail
- Rathbun blade shrimp
- Rathbun cleaner shrimp
- Rathbun hingebeak
- Rathbun porcelain crab
- Rathbun's giant file shell
- Rathbun's lobster shrimp
- Rathbun's vinegar crab
- Rawai cone snail
- Rawson's cup coral
- Ray's horny sponge
- Rayed cone
- Rayed dwarf-turban
- Rayed keyhole limpet
- Rayed limpet
- Rayed Mediterranean limpet
- Rayed pearl oyster
- Rayed strigilla
- Rayed tree oyster
- Rayed trough-shell
- Rayed wheel limpet
- Razor mud shrimp
- Razor mussel
- Razor shrimp
- Reaper cuttlefish
- Rear-spined elbow crab
- Recluzia snail
- Rectangular erycina
- Rectangular false cockle
- Red abalone
- Red acorn worm
- Red and white lobsterette
- Red and white-spotted reef crab
- Red arrow crab
- Red bait
- Red bat star
- Red beaded anemone
- Red beard sponge
- Red bootlace
- Red boring sponge
- Red brittlestar
- Red brocade hermit
- Red cave shrimp
- Red claw cuapetes shrimp
- Red crust
- Red cushion sea star
- Red cushion starfish
- Red dead men's fingers
- Red egg crab
- Red encrusting sponge
- Red fanworm
- Red flat oyster
- Red flowerhead polyp
- Red frond-aeolis
- Red galathea crab
- Red ghost crab
- Red glass-hair chiton
- Red gorgonian
- Red hairy crab
- Red heart urchin
- Red horny sponge
- Red hydrocoral
- Red Inca crab
- Red lamellaria
- Red liomera
- Red mangrove crab
- Red mangrove shell
- Red mud lobster
- Red ophiocoma
- Red pencil urchin
- Red pentagon
- Red pistol shrimp
- Red planaria
- Red polyp octocoral
- Red pond shrimp
- Red porcelain crab
- Red reef hermit crab
- Red reef lobster
- Red ribbon worm
- Red ripple bryozoan
- Red rock crab
- Red rock shrimp
- Red rock urchin
- Red rock-soaker sponge
- Red rostanga
- Red Sea anemone hermit crab
- Red Sea cone
- Red sea fan
- Red Sea fire urchin
- Red Sea ghost crab
- Red Sea giant clam
- Red Sea land hermit crab
- Red Sea mantis shrimp
- Red Sea octopus
- Red Sea pebble crab
- Red sea pork
- Red Sea top shell
- Red sea whip
- Red sea-squirt
- Red serpent star
- Red sieve encrusting sponge
- Red silt crab
- Red slipper lobster
- Red snakefish
- Red snapping shrimp
- Red snow crab
- Red speckled anemone
- Red speckled barnacle
- Red spider crab
- Red spiny cushion star
- Red sponge nudibranch
- Red spotted ascidian
- Red spotted shrimp
- Red spotted worm sea cucumber
- Red stickyhydroid
- Red stomphia
- Red stone coral
- Red stone crab
- Red striped amphipod
- Red swimcrab
- Red swimming crab
- Red tellin
- Red Thai crab
- Red thordis
- Red thordisa
- Red tree coral
- Red tree sponge
- Red trumpet calcareous tubeworm
- Red turban
- Red veiled chiton
- Red volcano sponge
- Red waratah anemone
- Red warty anemone
- Red whelk
- Red whip coral
- Red whip lobster
- Red-algae shrimp
- Red-and-white-banded sea-nymph
- Red-banded commensal scaleworm
- Red-banded lobster
- Red-banded transparent shrimp
- Red-brown ark
- Red-brown branching sponge
- Red-brown encrusting sponge
- Red-brown gibbula
- Red-chested sea cucumber
- Red-clawed crab
- Red-cloud auger
- Red-coral pistol shrimp
- Red-dotted compound tunicate
- Red-dotted guard crab
- Red-eyed flat crab
- Red-eyed reef crab
- Red-eyed xanthid crab
- Red-finger aeolis
- Red-fingered coral crab
- Red-fingered marsh crab
- Red-flecked mopalia
- Red-fringed frog shell
- Red-gilled marphysa
- Red-gilled nembrotha
- Red-handed shrimp
- Red-headed aeolid
- Red-jointed fiddler crab
- Red-legged hermit crab
- Red-legged swimming crab
- Red-line blue doris
- Red-line pheasant
- Red-lined bubble shell
- Red-lined flabellina
- Red-lined kentrodoris
- Red-lined worm
- Red-lipped olive
- Red-margined glossodoris
- Red-masked crab
- Red-mouth mushroom anemone
- Red-mouthed rock shell
- Red-nosed shrimp
- Red-orange fleece star
- Red-orange ghost shrimp
- Red-painted mitre
- Red-purple sea cradle
- Red-reef porcelain crab
- Red-ribbed scallop
- Red-ridged clinging crab
- Red-rim flatworm
- Red-speckled eubranchus
- Red-splashed platydoris
- Red-spot hinge-beak shrimp
- Red-spot octopus
- Red-spot topsnail
- Red-spotted coral crab
- Red-spotted footless sea cucumber
- Red-spotted guard crab
- Red-spotted horseshoe
- Red-spotted mitten lobster
- Red-spotted shore crab
- Red-streaked box crab
- Red-striped acorn barnacle
- Red-striped hermit
- Red-striped moonsnail
- Red-striped sea cucumber
- Red-tentacle cuthona
- Red-tentacle spurilla
- Red-tipped fireworm
- Red-white marbled sponge
- Red-white porcelain crab
- Red-white-and-blue worm
- Redback porcelain crab
- Redbacked coral prawn
- Redbanded clear shrimp
- Reddish cockle
- Reddish frog shell
- Reddish lepton
- Reddish limpet
- Reddish mangelia
- Reddish scallop
- Reddish venus
- Reddish yeti squat lobster
- Reddish-brown tonicia
- Redeye sponge crab
- Redfield's enope squid
- Redhair swimming crab
- Redleg calcinus
- Redleg humpback shrimp
- Redmouth olive
- Redspot king prawn
- Redspotted swimming crab
- Redtail prawn
- Reed tuskshell
- Reef box crab
- Reef lobster
- Reef mantis shrimp
- Reef nutclam
- Reef prawn
- Reef sponge
- Reef starfish
- Reef tunicate
- Reef urchin
- Reeve's bittersweet
- Reeve's cowrie
- Reeve's mangrove mussel
- Reeve's sea urchin
- Reeve's turban
- Reference cone
- Reflexed jewel box
- Reflexed lacuna
- Regal benthonella
- Regal murex
- Regal sea fan
- Regal spiny margarite
- Regal thorny oyster
- Regular caecum
- Regular fileclam
- Regular tusk shell
- Regular whelk
- Rehder's mitre
- Rehder's triton
- Reinhardt's cranch squid
- Reinhart's ark
- Rejected neptune
- Related spoonclam
- Related tambja
- Relative caldukia
- Reliable chromodoris
- Remies tellin
- Remipede
- Resetar's mangrove snake
- Resident killer whale
- Reticulate amphissa
- Reticulate anemone
- Reticulate cocculina
- Reticulate cowrie-helmet
- Reticulate distorsio
- Reticulate gadinia
- Reticulate kelp louse
- Reticulate miter
- Reticulate nerite
- Reticulate pteropod
- Reticulate turrid
- Reticulate tuskshell
- Reticulate wentletrap
- Reticulated barnacle
- Reticulated brittle star
- Reticulated chromodoris
- Reticulated cowrie
- Reticulated Hawaiian hermit
- Reticulated hingebeak
- Reticulated spiny star
- Reticulated turretsnail
- Reticulated venus
- Retiring hairy crab
- Retroversal jewel box
- Retrovert pteropod
- Reverse jewel squid
- Reversed chama
- Reversed glass sponge
- Reversed needle whelk
- Rhinoceros crab
- Rhizostome jellyfish
- Rhodactis
- Rhododendron cone
- Rhodophyte pheasant
- Rhombic lamellaria
- Rhomboid mussel
- Ribbed barnacle
- Ribbed brachiopod
- Ribbed bryozoan
- Ribbed cantharus
- Ribbed corbula
- Ribbed hoofsnail
- Ribbed limpet
- Ribbed mitre
- Ribbed moelleria
- Ribbed mussel
- Ribbed rocksnail
- Ribbed sunset clam
- Ribbed trophon
- Ribbed turban snail
- Ribbed turrid
- Ribbed venus
- Ribbon Coral
- Ribbon durvilledoris
- Ribbon seal
- Ribbon worm
- Ribboned miter
- Rice barrel-bubble
- Rice coral
- Rice grain bean cowry
- Rice olive
- Rice velvet shrimp
- Rice-grain bubblesnail
- Rice's whale
- Richard's black coral
- Richard's Cone
- Richardson's mangrove snake
- Richardson's snapping shrimp
- Richter's sand shrimp
- Ricordea
- Ridge-back lobsterette
- Ridge-tailed dorid
- Ridgeback mud crab
- Ridgeback rock shrimp
- Ridgeback shrimp
- Ridged burnupena
- Ridged cactus coral
- Ridged Crangon
- Ridged Dermatobranchus
- Ridged egg cowry
- Ridged Kelp Crab
- Ridged slipper lobster
- Ridged slippersnail
- Ridged surfclam
- Ridged swimming crab
- Ridged tellin
- Ridged venus
- Ridgeless Cactus Coral
- Ridgetail prawn
- Ridley sea turtle
- Ridley's fire sponge
- Right whale dolphin
- Right-angle beach louse
- Right-handed hermit
- Rightwing macoma
- Rigid bathyal crab
- Rigid sea cucumber
- Rigid venus
- Rigid-flowered sea pen
- Riise porcelain crab
- Riise's paper-bubble
- Rim fleshy limpet
- Rim scissurelle
- Ring clam
- Ring sea anemones
- Ring-tentacle anemone
- Ringed auger
- Ringed blind limpet
- Ringed cone
- Ringed doris
- Ringed Dosinia
- Ringed horny sponge
- Ringed lucine
- Ringed sap-sucking slug
- Ringed triton
- Ringed wormsnail
- Ringnes glass-scallop
- Rink's footless sea cucumber
- Rippled glass sponge
- Risso's crab
- Risso's dolphin
- Ritter's soft coral
- River plata mussel
- Robber harpiosquillid mantis shrimp
- Robo's Chromodoris
- Robust auger
- Robust bobtail squid
- Robust boxer shrimp
- Robust clubhook squid
- Robust deep-sea shrimp
- Robust frond-aeolis
- Robust glass shrimp
- Robust ivory tree coral
- Robust miniovula
- Robust mysella
- Robust sea anemone
- Robust sea squirt
- Robust tree hydroid
- Robustus swimcrab
- Rock aglaja
- Rock anemone
- Rock borer
- Rock clam
- Rock eater
- Rock entodesma
- Rock flower anemone
- Rock scallop
- Rock semele
- Rock shells
- Rock shrimp
- Rock Snapping Shrimp
- Rock star
- Rock violet
- Rock-boring barnacle
- Rock-boring urchin
- Rock-eating petricola
- Rockpile turban
- Rockpool prawn
- Rod-shaped marine isopod
- Rodger's calcareous sponge
- Roe-bandit gill worm
- Roe's abalone
- Roll-tail isopod
- Roller's aeolid
- Rooster venus
- Roostertail conch
- Root-mouthed jellyfish
- Rope grass hydroid
- Rorqual
- Rose barnacle
- Rose coral
- Rose Corbula
- Rose lace coral
- Rose murex
- Rose nudibranch
- Rose ribbon worm
- Rose sea star
- Rose shrimp
- Rose spiny brittle star
- Rose sponge
- Rose-branch murex
- Rose-Coloured Barnacle
- Rose-mouth morum
- Rose-painted semele
- Rose-petal tellin
- Rose-pink Cuthona
- Roseate hairy crab
- Rosecone cuttlefish
- Rosemary's Cone
- Rosemouth starshell
- Rosette sea squirt
- Roshna prawn
- Ross seal
- Ross worm
- Rossiter's murex
- Rostrate barnacle
- Rostrate Cardiomya
- Rostrate dipperclam
- Rostrate false donax
- Rostrate gastrochaenid
- Rostrate mactra
- Rostrate neptune
- Rostrate pitar
- Rostrate poromya
- Rostrate tellin
- Rosy acorn worm
- Rosy drill
- Rosy Egg Crab
- Rosy feather-star
- Rosy fiddler crab
- Rosy footless sea cucumber
- Rosy gyre triton
- Rosy Hermit Crab
- Rosy Hitcher Barnacle
- Rosy horny sponge
- Rosy jackknife
- Rosy keyhole limpet
- Rosy marianina
- Rosy Northern dovesnail
- Rosy phos
- Rosy phyllidia
- Rosy sea anemone
- Rosy spindle cowry
- Rosy starfish
- Rosy topsnail
- Rosy tritonia
- Rosy whelk
- Rosy-mouth murex
- Rotifer
- Rotund cleftclam
- Rotund lamellaria
- Rotund trophon
- Rotund whelk
- Rough argid
- Rough barnacle
- Rough box crab
- Rough butterfly Donax
- Rough cactus coral
- Rough carrier shell
- Rough cranch squid
- Rough cushion star
- Rough diplodon
- Rough drillia
- Rough elbow crab
- Rough feather coral
- Rough feather star
- Rough fusiform sea cucumber
- Rough guyniid coral
- Rough jackknife
- Rough king crab
- Rough limpet
- Rough littleneck
- Rough mantis shrimp
- Rough mitre
- Rough octopus
- Rough pen shell
- Rough periwinkle
- Rough pitar venus
- Rough plate coral
- Rough plectodon
- Rough razor
- Rough redeyed crab
- Rough river prawn
- Rough rubble crab
- Rough scallop sponge
- Rough sea anemone
- Rough sea cucumber
- Rough sea plume
- Rough sea squirt
- Rough shellback crab
- Rough skirted star
- Rough Spanish lobster
- Rough squareback crab
- Rough star coral
- Rough swimcrab
- Rough topsnail
- Rough trippa
- Rough tube sponge
- Rough turban
- Rough turbo
- Rough vertagus
- Rough-keeled argonaut
- Rough-plated sea cucumber
- Rough-scaled sea snake
- Rough-skin octopus squid
- Rough-skinned sea anemone
- Rough-skinned soft coral
- Rough-toothed dolphin
- Roughened mitre
- Roughneck shrimp
- Roughpatch shrimp
- Roughspine brittlestar
- Roughwrist soft crab
- Round crab
- Round lipped boot sponge
- Round slippersnail
- Round spoonclam
- Round-ended wedge shell
- Round-rib scallop
- Roundear enope squid
- Rounded bubblegum coral
- Rounded disc-fin squid
- Rounded ghost crab
- Rounded octopus
- Rounded sea star shrimp
- Roundish grooved Astarte
- Row pore rope sponge
- Rowing crab
- Royal bonnet
- Royal cloak scallop
- Royal comb venus
- Royal crab
- Royal cucumber
- Royal hypselodoris
- Royal marginella
- Royal paper-bubble
- Royal red shrimp
- Royal sea star
- Royal Spanish lobster
- Royal spiny lobster
- Rubber sponge
- Rubbery zoanthid
- Rubble crab
- Ruby brittle star
- Ruby lobsterette
- Ruby rostanga
- Ruby triton
- Rudder ark
- Rudder cardita
- Rude barrel-bubble
- Rudman's Phyllidiella
- Rudman's thecacera
- Rudolph's purpura
- Ruffled emarginula
- Rugby-ball dorid
- Rugged seacalf
- Rugosa nutmeg
- Rugose anemone
- Rugose bonnet
- Rugose donax
- Rugose drupe
- Rugose hooked squid
- Rugose land crab
- Rugose mactra
- Rugose miter
- Rugose nutmeg
- Rugose pen shell
- Rugose squat lobster
- Rugose swimcrab
- Rugose thracia
- Ruppell's keyhole limpet
- Rüppell’s octopus squid
- Russell's sea snake
- Rust-spotted guard crab
- Rustic aeolid
- Rustic limpet
- Rustica dove shell
- Rusty ark
- Rusty axinopsid
- Rusty bamboo coral
- Rusty bryozoan
- Rusty dovesnail
- Rusty guard crab
- Rusty miter
- Rusty Montagu shell
- Rusty moonsnail
- Ryukyu pygmy squid
- Sabine Island aglaja
- Sabre prawn
- Sacculina
- Sacred horny sponge
- Saddle grooved macoma
- Saddle oyster
- Saddle tree oyster
- Saddle-shaped keyhole limpet
- Saddleback shrimp
- Saddled nudibranch
- Saffron cone
- Saffron mitre
- Safian limpet
- Sagami Bay moon snail
- Sagamitama sea hydra
- Sakhalin surf clam
- Sakura shrimp
- Salisbury's spindle
- Salish toothshell
- Salle's auger
- Sally Lightfoot crab
- Salmon aeolis
- Salmon anemone
- Salmon bernardclam
- Salmon glass-scallop
- Salmon horse conch
- Salmon louse
- Salmon margarite
- Salmon sealouse
- Salmon shrimp
- Salmon tellin
- Salp
- Salt and pepper
- Salt and pepper sea cucumber
- Salt marsh snake
- Salt-and-pepper doris
- Saltmarsh hydrobe
- Saltmarsh mud crab
- Saltpan fiddler
- Samar conch
- San Clemente dovesnail
- San Diego chalice-bubble
- San Diego datemussel
- San Diego lamellaria
- San Diego scallop
- San Diego thraciid
- San Diego vitrinella
- San Francisco anemone
- San Francisco brine shrimp
- San Juan aeolid
- San Pedro auger
- San Pedro dwarf olive
- San Pedro mysella
- San Pedro thraciid
- San Pedro triphora
- Sand anemone
- Sand bar worm
- Sand bubbler crab
- Sand builder worm
- Sand burrowing brittle star
- Sand chimney worm
- Sand cockle
- Sand digger shrimp
- Sand ghost shrimp
- Sand glistenworm
- Sand isopod
- Sand jellyfish
- Sand longeye shrimp
- Sand lyria
- Sand mason worm
- Sand oyster
- Sand sea cucumber
- Sand sea star
- Sand slug
- Sand snapping shrimp
- Sand star
- Sand swimcrab
- Sand violet
- Sand-dollar pea crab
- Sand-dusted cone
- Sand-dwelling fusiform sea cucumber
- Sandalled anemone
- Sandbeach auger
- Sandbird octopus
- Sandbug
- Sandcastle worm
- Sandfish (sea cucumber)
- Sandflat elbow crab
- Sandpaper Henricia
- Sandpaper rice coral
- Sandpaper trophon
- Sandy anemone
- Sandy lineus
- Sandy lobed sea squirt
- Sandy lyonsia
- Sandy pandora
- Sandy sea cucumber
- Santa Barbara cerith
- Santa Barbara Cyclocardia
- Santa Barbara glass-scallop
- Santa Barbara janolus
- Santa Barbara rocksnail
- Santa Barbara simnia
- Santa Barbara spindle
- Santa Barbara whelk
- Santa Monica dovesnail
- Santa Rosa alvania
- Santa Rosa murex
- Santo domingo carditid
- Santo domingo falsemussel
- Santo domingo mussel
- Sao Paulo shrimp
- Sao Paulo squid
- Sap-sucking slug
- Sapelo okenia
- Sarape nudibranch
- Sargassum anemone
- Sargassum nudibranch
- Sargassum shrimp
- Sargassum snail
- Sargassum swimming crab
- Sars shrimp
- Sato's beaked whale
- Saturna fileclam
- Saucer bryozoan
- Saucer scallop
- Saucer-shaped horny sponge
- Saul's cowrie
- Savigny's Brittle Star
- Savigny's jewel box
- Savigny's long-spine sea urchin
- Saw blade shrimp
- Sawedged spooner
- Sawtooth elbow crab
- Sawtooth penshell
- Say mud crab
- Say's false limpet
- Say's keyhole limpet
- Saya de malha lobsterette
- Sazanka's cone
- Scabby platydoris
- Scabra periwinkle
- Scabrous barnacle
- Scalar odostomia
- Scale star
- Scale worm
- Scaled crab
- Scaled sea cucumber
- Scaled slipper lobster
- Scaled squid
- Scaled wormsnail
- Scaleside piddock
- Scallop sea squirt
- Scalloped murex
- Scalloped spiny lobster
- Scalloped wentletrap
- Scalloplike bittersweet shell
- Scaly brittle star
- Scaly dogwhelk
- Scaly horny sponge
- Scaly lyonsia
- Scaly nerite
- Scaly Pacific scallop
- Scaly pearl-oyster
- Scaly rocksnail
- Scaly scallop
- Scaly tunicate
- Scaly wing-oyster
- Scaly worm shell
- Scaly-foot snail
- Scaly-tailed mantis shrimp
- Scarce tube-dwelling anemone
- Scarlet and gold star-coral
- Scarlet coral
- Scarlet False Stomatella
- Scarlet king crab
- Scarlet Lady
- Scarlet lobsterette
- Scarlet mime crab
- Scarlet miter
- Scarlet periwinkle
- Scarlet sea cucumber
- Scarlet sea spider
- Scarlet shrimp
- Scarlet six-rayed star
- Scarlet thorny oyster
- Scarlet-tip aeolis
- Scarred nylon shrimp
- Scattered Pore Rope Sponge
- Scavenger whelk
- Scavenging isopod
- Schilder's cowrie
- Schmidt datemussel
- Schmitt pea crab
- Schmitt's lattice horny sponge
- Schoolmaster gonate squid
- Schrenk's limpet
- Schuchert's hydroid
- Scimitar mactra
- Scissor datemussel
- Sclera rocksnail
- Scolymia
- Scorched mitre
- Scorched monodont
- Scorched mussel
- Scorpio spider conch
- Scorpion mud lobster
- Scorpion murex
- Scorpion spider crab
- Scorpion stalked barnacle
- Scotch bonnet
- Scott Johnson's nudibranch
- Scraggly bottle brush black coral
- Scratched mysella
- Scratched tuskshell
- Screw turret
- Scribbled nudibranch
- Scribbled octopus
- Scripps Cousins wood-dwelling seastar
- Script venus
- Scripta bittersweet
- Scroll coral
- Sculpted lobster
- Sculptured clutch crab
- Sculptured Donax
- Sculptured lobster
- Sculptured mitten lobster
- Sculptured mud crab
- Sculptured nerite
- Sculptured porcelain crab
- Sculptured rocksnail
- Sculptured shrimp
- Sculptured topsnail
- Sculptureless verticord
- Scutate stermaspid worm
- Scythe shrimp
- Sea apple
- Sea armadillo
- Sea beard
- Sea biscuit
- Sea blister
- Sea chameleon
- Sea cherub
- Sea chervil
- Sea clod
- Sea cucumber crab
- Sea cypress hydroid
- Sea daisy
- Sea dandelion
- Sea fan
- Sea finger
- Sea fir
- Sea firefly
- Sea football
- Sea frost
- Sea gherkin
- Sea gooseberry
- Sea grape
- Sea grass sea fir
- Sea hedgehog hydroid
- Sea lemon
- Sea lettuce sea flea
- Sea lily
- Sea louse
- Sea mat
- Sea mitre
- Sea monarch top
- Sea mouse
- Sea nettle
- Sea onion
- Sea pancake
- Sea pansy
- Sea peach
- Sea pen
- Sea piglet
- Sea pill bug
- Sea pine hydroid
- Sea pineapple
- Sea plume
- Sea porcupine
- Sea pork
- Sea potato
- Sea rod
- Sea sapphire
- Sea skater
- Sea slater
- Sea spleenwort
- Sea squirt shrimp
- Sea star comb jelly
- Sea Star of Penang
- Sea strawberry
- Sea tamarisk
- Sea tank
- Sea thread hydroid
- Sea tulip
- Sea turtle leech
- Sea urchin crab
- Sea urchin shrimp
- Sea vase
- Sea walnut
- Sea whip
- Sea whip slug
- Sea-clown triopha
- Sea-cucumber galeommatid
- Sea-fan anemone
- Sea-urchin snapping shrimp
- Sea-whip simnia
- Seabells
- Seabiscuit pea crab
- Seaboard marginella
- Seafan Hydroid
- Seafan shrimp
- Seagrass Elysia
- Seagrass shrimp
- Seagrass spider crab
- Seahorse whelk
- Sealoch anemone
- Seashore earwig
- Seashore springtail
- Seaside Dragonlet
- Seasquirt okenia
- Seastar shrimp
- Seaweed ascidian
- Seaweed flame sea slug
- Seaweed sea slug
- Seawhip barnacle
- Seawhip shrimp
- Seba's moon snail
- Sebae anemone
- Secret Clanculus
- Secret jewelbox
- Sedna sea goddess
- Seed Nut Clam
- Sei whale
- Selenka's Sea Cucumber
- Semele
- Semi-rough venus
- Semi-terrestrial shrimp
- Semigrooved venus
- Semismooth wentletrap
- Semisulcate moonsnail
- Senatorial scallop
- Senegal ark
- Senegal nerite
- Senegalese smooth swimcrab
- Senegambian tellin
- Sentinel crab
- Sepik beaked sea snake
- Serena's Notodoris
- Serene's Black Coral Crab
- Serpent Brittle Star
- Serpent coral
- Serpent star spider brittle star
- Serpent synaptid
- Serpent's table brittlestar
- Serpentine cup coral
- Serpulid odostome
- Serpulid worm
- Serpuline skenea
- Serrate arrow shrimp
- Serrate fan lobster
- Serrated axiid
- Serrated hem star
- Serrated hingebeak
- Serrated porcelain crab
- Sessile ctenophore
- Setose hermit
- Seven-arm octopus
- Seven-armed starfish
- Sevenline shrimp
- Sevenspine bay shrimp
- Sevenstar flying squid
- Sexy shrimp
- Shabby calcareous sponge
- Shady whelk
- Shafted calcareous sponge
- Shag-rug aeolis
- Shaggy Aegires
- Shaggy brittle star
- Shaggy Cadlinella
- Shaggy clinging crab
- Shaggy dovesnail
- Shaggy horny sponge
- Shaggy sponge crab
- Shame faced crab
- Shameface heart crab
- Shark Bay sea snake
- Shark eye
- Sharkclub octopus
- Sharks Bay pearl oyster
- Sharp nassa
- Sharp razor clam
- Sharp shuttle shell
- Sharp-angled cone
- Sharp-nosed deep-sea shrimp
- Sharp-point nutclam
- Sharp-rib alvania
- Sharp-rib cyclostreme
- Sharp-rib drill
- Sharp-rib lirularia
- Sharp-rib semele
- Sharp-tailed cumacean
- Sharpear enope squid
- Sharphorn clinging crab
- Sharpnose crab
- Sharpoar swimming crab
- Sharptail lancelet
- Sharptail shortfin squid
- Sharptooth swimcrab
- Sheathed bristle-cage worm
- Sheep crab
- Sheep's wool sponge
- Shelf-knob sea rod
- Shellhash lancelet
- Shelling crab
- Shen crab
- Shepherd's beaked whale
- Sheriff-badge sea star
- Shiba shrimp
- Shield false limpet
- Shield fan lobster
- Shield fleshy limpet
- Shield limpet
- Shield shell
- Shielded bryozoan
- Shielded dogwhelk
- Shinbone tibia
- Shingle glass-scallop
- Shingle tube worm
- Shingle urchin
- Shingled carriersnail
- Shingled myonera
- Shingled tree coral
- Shingled whelk
- Shining balcis
- Shining Bomber
- Shining ervilia
- Shining firefly squid
- Shining Glossodoris
- Shining lepton
- Shining murex
- Shining sea fan coral
- Shining sunset shell
- Shining topshell
- Shiny auger
- Shiny bird squid
- Shiny cooperclam
- Shiny dwarf-tellin
- Shiny marginella
- Shiny mussel
- Shiny pink-striped prawn
- Shiny red sea squirt
- Shiny sponge
- Ship nutclam
- Shipworm
- Shireen's Phyllidiopsis nudibranch
- Shiro coral
- Short baby-bubble
- Short bladder horny sponge
- Short bubble
- Short coral-shell
- Short dipperclam
- Short macaroni sponge
- Short macoma
- Short Sea Snake
- Short sea whip
- Short spined ophioderma
- Short spined sea star
- Short thracia
- Short-arm flapjack octopod
- Short-browed mud shrimp
- Short-finned pilot whale
- Short-haired crab
- Short-lobed comb jelly
- Short-nosed sea snake
- Short-quill sea pen
- Short-scaled worm
- Short-snouted callista
- Short-spined black urchin
- Short-spined brittle star
- Short-spined nylon shrimp
- Short-spinned murex
- Short-tail latirus
- Short-tailed ceratosoma
- Short-tubed boring sponge
- Shortarm gonate squid
- Shortclub cuttlefish
- Shortened mitre
- Shortfin squid
- Shortfinger neck crab
- Shorthorn clinging crab
- Shorthorn decorator crab
- Shorthorn spiny crab
- Shortneck pear crab
- Shortneck triton
- Shortnose mantis shrimp
- Shortscale eualid
- Shortspined hairy crab
- Shot yoldia
- Shoulderblade coral
- Shoulderblade sea cat
- Shouldered castor bean
- Shouldered eulima
- Shouldered pearwhelk
- Shouldered pheasant
- Shouldered purse crab
- Shovel headed worm
- Showy pheasant
- Showy xanthid crab
- Shrew whelk
- Shrimp parasitic isopod
- Shuttlecock volva
- Siamese ocellate octopus
- Siamese shipworm
- Siberian horny sponge
- Sibling yoldia
- Siboga cuthona
- Siboga lobster
- Siboga squid
- Sicilian comb-finned squid
- Sickle hydroid
- Sickle jackknife
- Sicklefoot frog crab
- sickletooth pygmy eledone
- Sidegill slug
- Sidestriped shrimp
- Sieve cowrie
- Sieve-pore boring sponge
- Signet ring anemone
- Silk-clad olive
- Silken scallop
- Silky dosinia
- Silky footless sea cucumber
- Silky medusa
- Silky sea anemone
- Silky tegula
- Silky wentletrap
- Silky whelk
- Silver conch
- Silver dimyid
- Silver nudibranch
- Silver-mouthed monodont
- Silver-spotted sea anemone
- Silverlip pearl oyster
- Silvermouth turban
- Silvery topsnail
- Simba Cratena
- Simi moon snail
- Similar auger shell
- Similar shrimp
- Simnia
- Simple chaperia
- Simple cleftclam
- Simple collector crab
- Simple dovesnail
- Simple horny sponge
- Simple lora
- Simple-rayed membrane sponge
- Singapore scallop
- Singapore vinegar crab
- Singed cone
- Singed peristernia
- Single-stalk aeolis
- Singular sea fan
- Sinistral spiral tubeworm
- Sinuate ceratosoma
- Sinuate paperbubble
- Sinularia
- Sinuous cactus coral
- Sinuous cup coral
- Sinuous whelk
- Siphonate cranch squid
- Siphonophore
- Sipunculid anemone
- Sirius false limpet
- Sirvent's disc-fin squid
- Sister diplodon
- Sitka coastal shrimp
- Sitka periwinkle
- Six holed keyhole urchin
- Six-lined ribbon worm
- Six-ray Star Coral
- Sixspine elbow crab
- Skeleton panda sea squirt
- Skeleton shrimp
- Skewed ark
- Skewed fileclam
- Skunk cleaner shrimp
- Skunk sea cradle
- Sladen's star
- Slandered tellin
- Slate pencil urchin
- Slate-pencil urchin shrimp
- Sleek macoma
- Sleepy crab
- Sleepy sponge crab
- Slender Admete
- Slender bittium
- Slender blade shrimp
- Slender ceratosoma
- Slender cerith
- Slender checkered isopod
- Slender coastal shrimp
- Slender cone
- Slender cuttlefish
- Slender eulima
- Slender footless sea cucumber
- Slender gilded coral
- Slender glass-hair chiton
- Slender Glassy-bubble
- Slender glistenworm
- Slender green sea star
- Slender horny sponge
- Slender inshore squid
- Slender isopod
- Slender latirus
- Slender lettuce coral
- Slender macoma
- Slender mantis shrimp
- Slender marsh clam
- Slender periwinkle
- Slender roboastra
- Slender sargassum shrimp
- Slender sea pen
- Slender sea star
- Slender shrimp
- Slender simnia
- Slender Spider Crab
- Slender spindle
- Slender stickhydroid
- Slender strombina
- Slender swimcrab
- Slender triton
- Slender tube amphipod
- Slender wentletrap
- Slender-necked sea snake
- Slenderbeak coastal shrimp
- Slight baby ear
- Slime membrane sponge
- Slime-shooting worm-snail
- Slimy beachworm
- Slimy boring sponge
- Slimy lattice horny sponge
- Slimy sea plume
- Slimy slug
- Slipper coral
- Slipper limpet
- Slipper lobster
- Slipper sea cucumber
- Slipper-limpet crepidule
- Slippersnail
- Slippery wedge shell
- Slit limpet
- Slit shell
- Slit wormsnail
- Slit-pore sea rod
- Slit-worm shell
- Slitted sand dollar
- Slope argid
- Slope ghost shrimp
- Slope lebbeid
- Sloping thracia
- Slow prawn
- Small acorn barnacle
- Small arched box crab
- Small ark shell
- Small banded keyhole limpet
- Small banded venus
- Small Beaded Triton
- Small cup coral
- Small cushion starfish
- Small dog cockle
- Small Dog Whelk
- Small Doto
- Small European locust lobster
- Small feathery black coral
- Small furrow lobster
- Small fusiform sea cucumber
- Small goose barnacle
- Small grape sea slug
- Small hermit crab
- Small hollow horny sponge
- Small knob coral
- Small knobbed sea slug
- Small mantis shrimp
- Small needle whelk
- Small octopus
- Small opal top shell
- Small pale sea cradle
- Small periwinkle
- Small pitcher horny sponge
- Small polycera
- Small polyp stone coral
- Small polyped gorgonian
- Small sea fan
- Small short razor
- Small snail parasite
- Small snakelocks anemone
- Small Spanish lobster
- Small staghorn species
- Small star coral
- Small striped cuttlefish
- Small tree sponge
- Small tusk shell
- Small umbrella shell
- Small villosus hermit crab
- Small violet snail
- Small wentletrap
- Small white hermit crab
- Small white rock sea cucumber
- Small-coned coral
- Small-dot anemone crab
- Small-ear fileclam
- Small-spot octopus
- Small-toothed cowry
- Smalleye coastal shrimp
- Smalleyed squillid mantis shrimp
- Smallfin gonate squid
- Smallhole clutch crab
- Smirna barrel-bubble
- Smirnia whelk
- Smith's cuttlefish
- Smith's Fiddler Crab
- Smith's small-headed sea snake
- Smoky Cone
- Smooth Abra
- Smooth Aegires
- Smooth auger
- Smooth bay shrimp
- Smooth black coral
- Smooth black trochid
- Smooth brittle-star
- Smooth bug
- Smooth bum coral
- Smooth burrowing anemone
- Smooth butter clam
- Smooth caecum
- Smooth canoe-shell
- Smooth cauliflower coral
- Smooth Donax
- Smooth Dosinia
- Smooth dovesnail
- Smooth duckclam
- Smooth dwarf auger
- Smooth elbow crab
- Smooth eyed ghost crab
- Smooth false donax
- Smooth fan lobster
- Smooth fileclam
- Smooth Flame Scallop
- Smooth Flower Coral
- Smooth giant clam
- Smooth glass-hair chiton
- Smooth hooked squid
- Smooth lamellaria
- Smooth leather bryozoan
- Smooth lepidozona
- Smooth mactra
- Smooth mantis shrimp
- Smooth moon turban
- Smooth mopalia
- Smooth mud crab
- Smooth mussel crab
- Smooth nutclam
- Smooth nylon shrimp
- Smooth pink Pupa
- Smooth pink snail
- Smooth platter shell
- Smooth plough shell
- Smooth red shrimp
- Smooth redeyed crab
- Smooth risso
- Smooth scallop
- Smooth scallop sponge
- Smooth shore crab
- Smooth spooner
- Smooth squillid mantis shrimp
- Smooth star coral
- Smooth starfish
- Smooth stone crab
- Smooth sundial
- Smooth swimcrab
- Smooth tellin
- Smooth thracia
- Smooth tube sponge
- Smooth venus
- Smooth wentletrap
- Smooth Western nassa
- Smooth-coated otter
- Smooth-edge jewelbox
- Smooth-hand mud crab
- Smooth-spined tree coral
- Smooth-tooth aeolis
- Smoothclaw snapping shrimp
- Smoothpalm hermit
- Smoothshell shrimp
- Smoothshelled swimming crab
- Smoothskin octopus
- Smoothspined snailfur
- Smoothtail spiny lobster
- Smoothwrist soft crab
- Snail fur
- Snail trefoil hydroid
- Snake brain coral
- Snake-like worm shell
- Snake's head cowry
- Snake's head lamp shell
- Snake's skin nerite
- Snakearm octopus
- Snakefish sea cucumber
- Snakelocks anemone
- Snakelocks shrimp
- Snakeskin chiton
- Snakey bornella
- Snipe's bill murex
- Snow goddess nudibranch
- Snow whelk
- Snow-Flaked Cone
- Snow-speckled scaleworm
- Snowflake coral
- Snowflake marginella
- Snowflake snapping shrimp
- Snowy dwarf olive
- Snowy trivia
- Snubnose Corbula
- Snyder blade shrimp
- Social feather duster
- Social lineus
- Social snapping shrimp
- Social tunicate
- Soft bell hydroid
- Soft coral cowrie
- Soft coral crab
- Soft coral nudibranch
- Soft coral porcelain crab
- Soft coral snapping shrimp
- Soft crab
- Soft gingerbread hem star
- Soft locust lobster
- Soft orange star
- Soft sea cucumber
- Soft tangerine starfish
- Soft-hairy hermit crab
- Softshell red crab
- Soldier cone
- Soldier crab
- Soldier striped shrimp
- Soldier swimming crab
- Solen whelk
- Solid ark
- Solid auger
- Solid bubble
- Solid drillia
- Solid horny sponge
- Solid kanakaster
- Solid moon snail
- Solid pheasant
- Solid pupa
- Solid surf clam
- Solitary cup coral
- Solitary disk coral
- Solitary glassy-bubble
- Solitary gorgonian hydroid
- Solitary pendula
- Solitary pink-mouth hydroid
- Solitary sponge hydroid
- Solitary tube worm
- Solitary tunicate
- Solute akera
- Sombrero lucine
- Sooty seahare
- Sorcerer mantis shrimp
- South African Dusky Dolphin
- South African mole crab
- South American fur seal
- South American hermit crab
- South American sea lion
- South American sea nettle
- South Island Hector's dolphin
- South seas coral shell
- Southern algae shrimp
- Southern anemone
- Southern Australia scallop
- Southern baeolidia
- Southern berthella
- Southern blue-ringed octopus
- Southern bobtail squid
- Southern bottlenose whale
- Southern bottletail squid
- Southern brown shrimp
- Southern cerianthid
- Southern cup-coral
- Southern cuttlefish
- Southern elephant seal
- Southern fin whale
- Southern geoduck
- Southern giant octopus
- Southern goose barnacle
- Southern hardshell clam
- Southern hooded shrimp
- Southern humpback whale
- Southern keeled octopus
- Southern king crab
- Southern limpet
- Southern long-finned pilot whale
- Southern lugworm
- Southern marshclam
- Southern mauxia shrimp
- Southern melibe
- Southern midorigai
- Southern mole glistenworm
- Southern moon jelly
- Southern pink shrimp
- Southern pygmy squid
- Southern reef squid
- Southern resident killer whale
- Southern ribbed-mussel
- Southern right whale dolphin
- Southern river otter
- Southern river terrapin
- Southern rock lobster
- Southern rostanga
- Southern rough shrimp
- Southern sand octopus
- Southern sea mouse
- Southern sea otter
- Southern sei whale
- Southern soft coral
- Southern spider crab
- Southern spindle-bubble
- Southern spiny lobster
- Southern spinyhead
- Southern staghorn bryozoan
- Southern surfclam
- Southern teardrop crab
- Southern tough-guy worm
- Southern tuatua
- Southern velvet shrimp
- Southern white shrimp
- Southern white-spot octopus
- Southwest Atlantic red crab
- Souverbie's sapsucker
- Sowerby's beaked whale
- Sowerby's cone
- Sowerby's fleshy limpet
- Sowerby's sea hare
- Sowerby's typhus
- Sozon's cone
- Spade-toothed whale
- Spaghetti bryozoan
- Spaghetti finger leather coral
- Spaghetti sponge
- Spaghetti worm
- Spalding's dorid
- Spanish dancer
- Spanish shawl
- Spanish slipper lobster
- Spanish tenor
- Sparkling shrimp
- Sparse dovesnail
- Sparse wentletrap
- Spartina hydrobe
- Spathate scallop
- Spathate shipworm
- Spaulding's sea fan coral
- Spear lobster
- Spear mangelia
- Spear shrimp
- Spear squid
- Speciose platydoris
- Specious mitre
- Speck-claw decorator crab
- Speckled bittersweet
- Speckled compound tunicate
- Speckled cone
- Speckled cup coral
- Speckled platydoris
- Speckled scallop
- Speckled sea louse
- Speckled shrimp
- Speckled snapping shrimp
- Speckled swallow-tailed sea slug
- Speckled swimming crab
- Speckled tegula
- Speckled tellin
- Spectacle worm
- Spectacled box crab
- Spectacled porpoise
- Spectacled sea snake
- Spectacular corolla
- Spectacular scallop
- Spectral bittersweet
- Spengler's trumpet
- Spherical blob snail
- Spherule delphinula
- Sphinx phyllidiopsis
- Sphon's chromodorid
- Spicate cerithe
- Spider conch
- Spider cuttlefish
- Spider hazards
- Spider moon snail
- Spider octopus
- Spider prawn
- Spider shrimp
- Spider sponge
- Spider squat lobster
- Spiderweb cone
- Spike-back isopod
- Spiketoe sumo crab
- Spiky nudibranch
- Spiky sausage sea cucumber
- Spiky tube sponge
- Spindle cone
- Spindle cowrie
- Spindle shell
- Spindle topsnail
- Spindly rabbit-ear bryozoan
- Spine coral
- Spine-bellied sea snake
- Spine-tailed sea snake
- Spineback hairy crab
- Spined broadface crab
- Spined fiddler crab
- Spined kelp crab
- Spined spindle-bubble
- Spined-rest snapping shrimp
- Spineless cuttlefish
- Spineless spindle-bubble
- Spinetail lobsterette
- Spinnaker anemone
- Spinner dolphin
- Spinose cerith
- Spinose chiton
- Spinose lucine
- Spinose rubble crab
- Spinose stephanolona
- Spinous elbow crab
- Spiny armoured shrimp
- Spiny box crab
- Spiny Brittle Star
- Spiny chiton
- Spiny claw swimming crab
- Spiny cockle
- Spiny cup-and-saucer
- Spiny dog whelk
- Spiny fileclam
- Spiny greasyback shrimp
- Spiny hands swimming crab
- Spiny henricia
- Spiny jewelbox
- Spiny krill
- Spiny leather bryozoan
- Spiny lebbeid
- Spiny mole crab
- Spiny mud crab
- Spiny murex
- Spiny mushroom coral
- Spiny myrtea
- Spiny oyster
- Spiny pagoda snail
- Spiny papercockle
- Spiny pelagic deep-sea shrimp
- Spiny piddock
- Spiny porcelain crab
- Spiny pricklycockle
- Spiny red star
- Spiny rock oyster
- Spiny rock shell
- Spiny rock shrimp
- Spiny sand seastar
- Spiny sand star
- Spiny scale worm
- Spiny scallop
- Spiny sea fan
- Spiny sea squirt
- Spiny sea star
- Spiny shellback crab
- Spiny shrimp
- Spiny slippersnail
- Spiny spider crab
- Spiny spooner
- Spiny starfish
- Spiny stone crab
- Spiny tennis ball sponge
- Spiny tiger shrimp
- Spiny trophon
- Spiny tubeworm
- Spiny turbinaria coral
- Spiny vase
- Spiny-handed Portunus
- Spiny-headed sea squirt
- Spiny-horn octopus
- Spiny-tailed lobster shrimp
- Spiny-tipped tunicate
- Spinyback spider crab
- Spinypalm hermit
- Spinytailed deepsea pelagic shrimp
- Spionid worm
- Spiral babylon
- Spiral coral
- Spiral margarite
- Spiral melongena
- Spiral nutmeg
- Spiral tube worm
- Spiral-ridged siffie
- Spiral-tufted bryozoan
- Spirate turban
- Spitsberg sea anemone
- Splash-zone beach hopper
- Splendid Chromodoris
- Splendid hermit
- Splendid sea cucumber
- Splendid snapping shrimp
- Splendid spooner
- Splendid topsnail
- Splendid whelk
- Splendid yeti squat lobster
- Split deep-sea shrimp
- Split-branch feather-duster
- Split-crown Feather Duster
- Split-pore black coral
- Split-thumb mantis shrimp
- Spliteye argid
- Splitlip vitrinella
- Splitnose crab
- Splitting cup coral
- Splitting fan coral
- Sponge ambusher worm
- Sponge barnacle
- Sponge Brittle Star
- Sponge crab
- Sponge decorator crab
- Sponge hermit
- Sponge isopod
- Sponge moss worm
- Sponge noumea
- Sponge odontozonid
- Sponge oyster
- Sponge peppermint shrimp
- Sponge porcelain crab
- Sponge slug
- Sponge worm
- Sponge Zoanthid
- Spongetip octopus
- Spongy decorator crab
- Spongy wentletrap
- Sponsal cone
- Spoon worm
- Spoonfinger rubble crab
- Spot prawn
- Spot-banded rissoa
- Spotless Snapping Shrimp
- Spottail mantis shrimp
- Spotted Aglaja
- Spotted arm shrimp
- Spotted box crab
- Spotted brittle star
- Spotted bubble snail
- Spotted bumblebee shrimp
- Spotted cerith
- Spotted chevron worm
- Spotted cleaner shrimp
- Spotted coral
- Spotted cowrie
- Spotted cranch squid
- Spotted Dendrodoris
- Spotted dolphin
- Spotted flatworm
- Spotted gray sponge
- Spotted hard clam
- Spotted Hypselodoris
- Spotted lagoon jelly
- Spotted leafworm
- Spotted limpet
- Spotted linckia
- Spotted moonsnail
- Spotted mussel
- Spotted pearl oyster
- Spotted pheasant shell
- Spotted porcelain crab
- Spotted red anemone
- Spotted rictaxis
- Spotted risso
- Spotted sea hare
- Spotted sea snake
- Spotted slippersnail
- Spotted spiny lobster
- Spotted squillid mantis shrimp
- Spotted stromb
- Spotted swimming crab
- Spotted tun
- Spotted unicorn
- Spotted vitularia
- Spottedbelly rock crab
- Spotty bobtail squid
- Spotty cuttlefish
- Spotwrist hermit
- Sprawling Sponge
- Spreading-sculpture Crenella
- Sprocket topsnail
- Spurfinger purse crab
- Spurred turban
- Squalid callista
- Squamate turban
- Squamose chiton
- Squamose scallop
- Squamose sunset clam
- Squamose venus
- Square sportella
- Square thraciid
- Square-shelled crab
- Squareback marsh crab
- Squarish Astarte
- Squat grass shrimp
- Squat lobster
- Squat lobster parasitic isopod
- Squat urchin shrimp
- Squatter pea crab
- Squidworm
- Squillaclam
- Squirrel's-tail hydroid
- St. John's Jellyfish
- St. Lawrence beluga
- St. Paul rock lobster
- St. Thomas frog shell
- St. Thomas triphora
- Stag shell
- Staghorn acropora
- Staghorn coral
- Staghorn hermit crab
- Staghorn sponge
- Stained Collector Urchin
- Stained tuskshell
- Staircase coralsnail
- Stalk-eyed mud crab
- Stalked barnacle
- Stalked compound tunicate
- Stalked jellyfish
- Stalked sea squirt
- Stalked vase sponge
- Stalkeye sumo crab
- Standard lucifer prawn
- Star anemone
- Star ascidian
- Star barnacles
- Star coral
- Star cyclostreme
- Star encrusting sponge
- Star horny sponge
- Star of the Sea seed shrimp
- Star scaled squid
- Star shell
- Star tubeworm
- Star-shaped limpet
- Star-sucker pygmy octopus
- Starburst anemone
- Stareye hermit
- Stareye octopus
- Starflower coral
- Starlet sea anemone
- Starlit enope squid
- Starpore sponge
- Starry berthella
- Starry bornella
- Starry cup coral
- Starry cuttlefish
- Starry flatworm
- Starry moon snail
- Starry petaloid coral
- Stearn's ear shell
- Stearns toothshell
- Stearns turrid
- Stebbing's isopod
- Steenstrup's bay squid
- Steenstrup's bobtail squid
- Steinbeck's aeolid
- Steinberg's corambe
- Stejneger's beaked whale
- Stellate cookie star
- Stellate hermit
- Stellate trochus
- Steller sea lion
- Stephenson's sea cucumber
- Sterrer's cave mysid
- Sterrer's cave shrimp
- Stevens hermit
- Stick bryozoan
- Stick hydroid
- Sticky snake sea cucumber
- Stiff pen shell
- Stiff-footed sea cucumber
- Stigmatic cone
- Stiletto coastal shrimp
- Stilt crabs
- Stilt spider crab
- Stimpson coastal shrimp
- Stimpson gastrochaenid
- Stimpson porcelain crab
- Stimpson thracia
- Stimpson's colus
- Stimpson's whelk
- Stinging anemone
- Stinging hydroid
- Stinging hydrozoan
- Stinging mangrove anemone
- Stinging tube sponge
- Stingray cone
- Stinker sponge
- Stinking sponge
- Stocky cerith
- Stohler's dorid
- Stoke's chiton
- Stokes' sea snake
- Stolid cowrie
- Stomatella
- Stone oyster
- Stone-cave sandmason tubeworm
- Stone-leaf coral
- Stonefish sea cucumber
- Stony sea cucumber
- Stony sea urchin
- Stony sponge
- Stooped mirachelus
- Storer's marginella
- Storey anemone
- Stork shrimp
- Stout bobtail
- Stout coastal shrimp
- Stout crangon
- Stout cyclocardia
- Stout red shrimp
- Stout spindle
- Stout squat lobster
- Stout tagelus
- Stout velvet shrimp
- Stovepipe sponge
- Straight barrel-bubble
- Straight glassy-bubble
- Straight hammer oyster
- Straight horsemussel
- Straight needle-pteropod
- Straight sea whip
- Straight tuskshell
- Strange sea urchin
- Strap-toothed whale
- Straw sundial
- Straw tun
- Strawberry anemone
- Strawberry conch
- Strawberry corallimorpharian
- Strawberry crab
- Strawberry digidentis
- Strawberry drupe
- Strawberry hermit crab
- Strawberry mitre
- Strawberry rostanga
- Strawberry sea slug
- Strawberry shortcake Acropora
- Strawberry spider crab
- Strawberry squid
- Strawberry topshell
- Strawberry vase sponge
- Strawberry worm
- Streaked sand clam
- Streaked-shelled tellina
- Striate aclis
- Striate barrel-bubble
- Striate beach clam
- Striate bubble
- Striate cardiomya
- Striate chromodoris
- Striate clio
- Striate cup-and-saucer
- Striate donax
- Striate finger coral
- Striate glass-hair chiton
- Striate helmet-bubble
- Striate limpet
- Striate lyonsia
- Striate martesia
- Striate nassa
- Striate pisania
- Striate scalesnail
- Striate scallop
- Striate tellin
- Striated buccinum
- Striated cone
- Striated hermit crab
- Striated locust lobster
- Striated mole crab
- Striated phyllidiopsis
- Striated sea hare
- Stridulating stone crab
- Strigate chromodoris
- Strigose stomatella
- Striking cuttlefish
- Striking sea star
- String jelly
- Stringarm octopus
- Stripe-leg spiny lobster
- Striped barnacle
- Striped brittlestar
- Striped bum coral
- Striped dolphin
- Striped dumpling squid
- Striped eulid
- Striped false limpet
- Striped feather star
- Striped glass-haired chiton
- Striped gooseneck barnacle
- Striped hinge-beak shrimp
- Striped mantis
- Striped margin shell
- Striped nudibranch
- Striped philinopsis
- Striped porcelain crab
- Striped red shrimp
- Striped river prawn
- Striped sea leech
- Striped sea slug
- Striped sea snake
- Striped sea urchin
- Striped shore crab
- Striped snapping shrimp
- Striped spine sea urchin
- Striped sun star
- Striped tellin
- Striped trapania
- Striped venus clam
- Stroem's trichobranchid worm
- Strombiform whelk
- Stromboid dove shell
- Stromboli keyhole limpet
- Strong elbow crab
- Strong prawn
- Strong's sidegill
- Strongtooth mud crab
- Stubborn sea cucumber
- Stubby coral snail
- Stubby frond-aeolis
- Stubby isopod
- Stubby solecurtus
- Studded hairy crab
- Studer's Henricia
- Stumpy bobtail squid
- Stunted volva
- Stutchbury's venus
- Styled Fiddler Crab
- Stylocoeniella coral
- Subantarctic fur seal
- Subantarctic stone crab
- Subantarctic struthiolaria
- Subcancellate ervilia
- Subglacial dipperclam
- Subglobose diplodon
- Suborbicular kellyclam
- Subovate fileclam
- Subovate softshell
- Substriated montacuta
- Subtrigonal bernardclam
- Subtruncate surf clam
- Subulate auger
- Subulate cone
- Suenson's brittle star
- Sugar limpet
- Sugarcane shrimp
- Sugokai tubeworm
- Sulcate barrel-bubble
- Sulcate cone
- Sulcate false-tun
- Sulcate limops
- Sulcate miter
- Sulcate planaxis
- Sulcate spoonclam
- Sulcate swamp cerith
- Sulcated chthamalid barnacle
- Sulfur sponge
- Sullied pheasant
- Sulphur horny sponge
- Sulphur noumea
- Sulu shrimp
- Suminoe oyster
- Sun Anemone Shrimp
- Sun carrier shell
- Sun coral
- Sun horny sponge
- Sun polyp
- Sun star
- Sun Zoanthid
- Sundaic paddler crab
- Sundial shell
- Sunflower sea star
- Sunflower worm
- Sunray lettuce coral
- Sunray surf clam
- Sunray venus
- Sunrise cone
- Sunrise tellin
- Sunset clam
- Sunset cup coral
- Sunset siliqua
- Superb coral shrimp
- Superb gaza
- Superb murex
- Superficial coral
- Supergiant amphipod
- Superior buccinum
- Supple sea fan coral
- Suppressed vitrinella
- Supreme Cone
- Supreme turrid
- Suratan cone
- Surf clam
- Surf hermit
- Surf mole crab
- Surf Redfish
- Surf Sandmole
- Surfgrass limpet
- Surfperch fish louse
- Surinam squid
- Surinam strigilla
- Suriname cowrie
- Sutured Cone
- Swallow cowrie
- Swallowtail aglaja
- Swamp ghost crab
- Swan conch
- Swan's mopalia
- Swanny armina
- Sweet potato sea cucumber
- Sweet sea potato
- Swelling coral
- Swift trapania
- Swift wing oyster
- Swift-footed worm
- Swift's scallop
- Swimbladder nematode
- Swimmer crab
- Swimming cynara
- Swimming sea lily
- Swimming shrimp
- Swollen olive
- Swollen sea fan coral
- Swollen Spire Snail
- Swollen spire-shell
- Swollen stomatella
- Swollen trumpet
- Swollen venus
- Swollen whelk
- Swollen-claw Squilla
- Swollen-knob candelabrum
- Sword razor shell
- Swordtip squid
- Sybaritic tellin
- Sydney cockle
- Sydney rock oyster
- Symbion
- Symbiotic hyperiid amphipod
- Symmetrical ark shell
- Symmetrical Brain Coral
- Symmetrical trough shell
- Symmetrical turretsnail
- Syracusan fusus
- Table coral
- Table lora
- Tabled sinezone
- Tabled whelk
- Tabling Acropora
- Tabulate wentletrap
- Taca clam
- Tacoma eulima
- Tagelus macoma
- Tail-less Pacific transparent-worm
- Tailed glistenworm
- Tailed globular horny sponge
- Tailed jelly
- Tailed nutclam
- Tailed Pacific transparent-worm
- Taiwan mauxia shrimp
- Taiwan pouched octopus
- Taiwanese humpback dolphin
- Takanoshima shipworm
- Talisman bigfin squid
- Tall false donax
- Tall frog shell
- Tall moonsnail
- Tall sea pen
- Tall tubularia
- Talona pholad
- Tamanend's bottlenose dolphin
- Tambja
- Tampa aclis
- Tampa Bay topsnail
- Tampa drill
- Tampa tellin
- Tan bushy soft coral
- Tan cup coral
- Tan mangelia
- Tan marginella
- Tanaid
- Tangerine sponge
- Tangled-straw three-section tubeworm
- Tankerville's cardita
- Tanner crab
- Tanner's deep-water shrimp
- Tanner's sea urchin
- Tapestry turban
- Tar spot sea cucumber
- Target rock shrimp
- Target shrimp
- Taronga philinopsis
- Tasmania venus clam
- Tasmanian Chromodoris
- Tasmanian giant crab
- Tasselled nudibranch
- Tasty Chromodoris
- Tawny conch shrimp
- Tawny heart sea urchin
- Tawny hermit crab
- Tawny mitre
- Taylor coastal shrimp
- Taylor dwarf-mussel
- Taylor's calcareous sponge
- Taylor's pea crab
- Taylor's social tunicate
- Tea drillia
- Tear drops
- Teardrop crab
- Teardrop marginella
- Teat sponge
- Teatfish
- Tectum modulus
- Teddy-bear crab
- Tegula
- Tehuelche octopus
- Tehuelche scallop
- Telescope octopus
- Telescope shrimp
- Telescope snail
- Tellin
- Tellin semele
- Ten coral
- Ten-lined urchin
- Ten-ray star coral
- Ten-tentacle burrowing anemone
- Tender glass sponge
- Tennis ball ascidian
- Tennis-ball sea cucumber
- Tennis-ball sponge
- Tenspine spider crab
- Tent olive
- Tentacle sea squirt
- Tentacle-shedding anemone
- Tentacled lagoon worm
- Tentacular cirriform polychaete
- Teppo snapping shrimp
- Teramachi's pen shell
- Terebellid worm
- Terebellum conch
- Terebra cone
- Teres cowrie
- Terminal vitrinella
- Ternate melongena
- Terrific foveolaria
- Territory murex
- Tessellate cone
- Tessellate helmet
- Tessellate mitre
- Tessellated bittersweet
- Tessellated halgerda
- Tessellated slime star
- Tetrodon toothshell
- Tevoro clam
- Texas aligena
- Texas coquina
- Texas diamondback terrapin
- Texas spindle-bubble
- Texas tellin
- Texas venus
- Texas vitrinella
- Textile caecum
- Textile chiton
- Textile cone
- Textile nerite
- Textile venus
- Textured sportella
- Thai vinegar crab
- Thatched barnacle
- Thecacera
- Thenarian burrowing anemone
- Thersite stromb
- Thetys salp
- Thick cyclocardia
- Thick finger coral
- Thick keyhole limpet
- Thick lacuna
- Thick lipped dog whelk
- Thick lucine
- Thick macoma
- Thick white horny sponge
- Thick-based entoproct
- Thick-cord whelk
- Thick-edged cowry
- Thick-lip drill
- Thick-lipped ribbed rissoa
- Thick-lipped spire shell
- Thick-ribbed whelk
- Thick-ridged venus
- Thick-ringed venus
- Thickclaw porcelain crab
- Thicklip jewelbox crab
- Thiel's boring amphipod
- Thiele's fire sponge
- Thiele's neosquid
- Thimble jellyfish
- Thin aclis
- Thin birdsnest coral
- Thin cauliflower coral
- Thin cyclinella
- Thin entodesma
- Thin finger coral
- Thin moonsnail
- Thin nut clam
- Thin purse-oyster
- Thin sea urchin
- Thin shrimp
- Thin tellin
- Thin tube coral
- Thin whelk
- Thin-fingered fiddler crab
- Thin-ribbed whelk
- Thin-shell littleneck
- Thin-shelled tellina
- Thin-sliced horny sponge
- Thinarm clutch crab
- Thinbeak neck crab
- Thinfoot night shrimp
- Thinlip jewelbox crab
- Thinstripe hermit crab
- Thistle scallop
- Thomas' cliona
- Thomas' sea urchin
- Thomas' trifora
- Thompson's calcareous sponge
- Thompson's chromodoris
- Thompson's corambid
- Thomson spider crab
- Thomson's sea pen
- Thomson's sea urchin
- Thordisa
- Thorn coral
- Thorn latirus
- Thornbush hydroid
- Thorned spiny crab
- Thorny chiton
- Thorny decorator crab
- Thorny elbow crab
- Thorny mud crab
- Thorny oyster
- Thorny scaleworm
- Thorny scallop
- Thorny sea cucumber
- Thorny sea mat
- Thorny sea pen
- Thorny worm
- Thorunna
- Thousand-rib mitre
- Thousand-spot cone
- Threaded abalone
- Threaded bittium
- Threaded latirus
- Threaded oyster
- Threaded pandora
- Threaded rimula
- Threaded trophon
- Threaded vitrinella
- Threaded whelk
- Three-angled murex
- Three-color miter
- Three-color polycera
- Three-corded pyram
- Three-knobbed conch
- Three-lined pectenodoris
- Three-lined turrid
- Three-plaited marginella
- Three-plaited triphoria
- Three-pronged spider crab
- Three-rib chiton
- Three-rib marginella
- Three-ridge lucine
- Three-spine alpheid
- Three-spine cavoline
- Three-spined box crab
- Three-spined geryon
- Three-spined mantis shrimp
- Three-spined nylon shrimp
- Three-spot nudibranch
- Three-spot slipper lobster
- Three-spot swimming crab
- Three-stripe doris
- Three-tooth cavoline
- Three-wing murex
- Threeline aeolis
- Threeline mudsnail
- Threeline pandora
- Threespine coastal shrimp
- Threetooth carditid
- Throat-ogre
- Thrush cowrie
- Thumbless pea crab
- Thumbnail crab
- Thuridilla
- Tiar venus
- Tiara top snail
- Tibia
- Tick shell
- Ticky snake sea cucumber
- Tidal spray crab
- Tidepool barnacle
- Tidepool copepod
- Tidepool ghost shrimp
- Tiger cowrie
- Tiger crab
- Tiger dorid
- Tiger egg cowrie
- Tiger flatworm
- Tiger lucine
- Tiger maurea
- Tiger moon snail
- Tiger olive
- Tiger pistol shrimp
- Tiger scallop
- Tiger snail
- Tiger star
- Tiger tail sea cucumber
- Tigger prawn
- Tile's sea slug
- Tiled pearl oyster
- Tiled pleurobranch
- Timid burrowing anemone
- Timor tellin
- Tinctorial sea slug
- Tinted cantharus
- Tinted paperbubble
- Tinted tellin
- Tinted wentletrap
- Tiny black sea cucumber
- Tiny condylclam
- Tiny cup coral
- Tiny dwarf olive
- Tiny lacuna
- Tiny moonsnail
- Tiny pouchclam
- Tiny rock crab
- Tiny white tunicate
- Tiny-teeth cowry
- Tip frogspawn coral
- Tipped bubblegum coral
- Tissot's rock shell
- Titan acorn barnacle
- Titi shrimp
- Toad mole crab
- Toad purpura
- Toadstool ascidian
- Toadstool leather coral
- Toheroa
- Tokio's egg shell
- Tollin's wentletrap
- Tolo velvet shrimp
- Tomato jellyfish
- Tombstone coral
- Tonga blue mushroom anemone
- Tongclaw snapping shrimp
- Tongue auger
- Tongue bobtail squid
- Tongue-eating louse
- Tonkin grass shrimp
- Tooth star
- Tooth-rib wentletrap
- Toothed donax
- Toothed emarginula
- Toothed flapjack octopod
- Toothed lucine
- Toothed marginella
- Toothed pirimela
- Toothed rock crab
- Toothed top shell
- Toothless lucine
- Toothshell hermit
- Toothy horny sponge
- Top shell
- Top shell whelk
- Top vase
- Topsent's horny sponge
- Tora velvet shrimp
- Torch coral
- Torpedo shrimp
- Tortoise crab
- Tortoise dove-shell
- Tortuga bobtail
- Tortugas bigclaw
- Tortugas cyclostreme
- Tortugas red
- Touch-me-not sponge
- Tough yellow branching sponge
- Tournefort's eunicea
- Tower latirus
- Tower snail
- Townsend eualid
- Townsend snapping shrimp
- Toxiferous cladocroce
- Tractor crab
- Traill's cerith
- Trans-Fly mangrove snake
- Translucent dipperclam
- Translucent dovesnail
- Translucent lamellaria
- Translucent spire shell
- Translucent yellow crust sponge
- Translucid chimney sponge
- Translucid limpet
- Transparent disc-top tunicate
- Transparent horny sponge
- Transparent lamellaria
- Transparent razor
- Transparent razor shell
- Transverse ark
- Transverse micro-cockle
- Trapania
- Trapezia
- Trapezia crab
- Trapeziid crab
- Trapezium horse conch
- Trapezoid thracia
- Trapezoid verticord
- Tread nemertean
- Tree anemone
- Tree coral
- Tree ring sea cradle
- Tree sponge
- Trembling nudibranch
- Trembling sea-mat
- Trench tuskshell
- Tri-spine horseshoe crab
- Triangle barnacle
- Triangle tanner crab
- Triangular ark
- Triangular limpet
- Triangular macoma
- Triangular marginella
- Triangular marsh clam
- Triangular mysella
- Triangular trophon
- Trichobranchiated mole crab
- Trichoplax
- Tricolor anemone
- Tricolor doris
- Tricolor hermit
- Tricolor nudibranch
- Tricolor olive
- Tricolor topsnail
- Trident cuttlefish
- Trident shrimp
- Trigonal condylclam
- Trigonal mactra
- Trigonal montacutid
- Trigonal poromya
- Trigonal tivela
- Trilix vitrinella
- Trilobate ceratosoma
- Trinda's horny sponge
- Triopha
- Triphora
- Triple venus
- Tripneustes
- Triquetra murex
- Triton
- Triton chromodoris
- Triton's trumpet
- Tritonia
- Tritoniopsis
- Trochiform pteropod
- Trochus
- Trojan star
- Trophon
- Tropical clubhook squid
- Tropical cyclostreme
- Tropical hermit crab
- Tropical mole crab
- Tropical octopus
- Tropical river prawn
- Troschel's murex
- Troubridge philinopsis
- True harp
- True heart cockle
- True tulip
- True's beaked whale
- True's porpoise
- Truffle dorid
- Trumpet anemone
- Trumpet shell
- Trumpet stalked jellyfish
- Truncate barnea
- Truncate Corbula
- Truncate Donax
- Truncate lantern clam
- Truncate rubble crab
- Truncate saxicave
- Truncate softshell
- Truncate sumo crab
- Truncate sunetta
- Truncate sunset clam
- Truncated brachiopod
- Truncated mangrove snail
- Truncatella
- Trunked jellyfish
- Tryon's Hypselodoris
- Tsivakihini paste shrimp
- Tsuruga Bay favorinus
- Tuatua
- Tube amphipod
- Tube anemone
- Tube builder
- Tube calcareous sponge
- Tube coral
- Tube Hydrocoral
- Tube pea crab
- Tube sponge
- Tube-building estuarine amphipod
- Tube-building worm
- Tube-dwelling pea crab
- Tubercled hairy spider crab
- Tubercled turris
- Tubercular anemone
- Tuberculara gyre triton
- Tuberculate cuttlefish
- Tuberculate cyclostreme
- Tuberculate Emarginula
- Tuberculate hairy crab
- Tuberculate kneefastia
- Tuberculate night anemone
- Tuberculate pear crab
- Tuberculate pen shell
- Tuberculate pore coral
- Tuberculated light-foot crab
- Tuberose rock shell
- Tuberulous nudibranch
- Tubetail isopod
- Tubeworm hermit
- Tubiferus ascidian
- Tubificid worm
- Tubular sea cucumber
- Tubular table coral
- Tubularia
- Tufted broadface crab
- Tufted ghost crab
- Tufted rock shrimp
- Tufted spiny sea cradle
- Tufted Tritoniopsis
- Tula phyllidia
- Tulip mussel
- Tulip snail
- Tulip whelk
- Tumid moon snail
- Tumid sphenia
- Tumid venus
- Tummy cowrie
- Tun shell
- Tunicate
- Tunicate siphon hydroid
- Tunnelling mud crab
- Turban mitre
- Turban snail
- Turban whelk
- Turbinaria
- Turbinate monodont
- Turbonilla
- Turgid fusiform sea cucumber
- Turgid garland hydroid
- Turgid venus
- Turkey wing
- Turned turrid
- Turned tuskshell
- Turner piddock
- Turnip spindle
- Turnip whelk
- Turnip-shaped rapa
- Turquet's octopus
- Turret sponge
- Turreted Aclis
- Turreted drill
- Turreted nerite
- Turreted wentletrap
- Turriculate turrid
- Turrid
- Turritella
- Turtle barnacle
- Turtle cowry
- Turtle crab
- Turtle dove shell
- Turtle limpet
- Turtle-grass anemone
- Turtle-headed sea snake
- Turtle-weed crab
- Turtlegrass pheasant
- Turtlegrass seahare
- Turtlegrass snapping shrimp
- Turton's moon snail
- Turton's weasel-eye
- Tusk coneworm
- Tusk shell
- Tuxedo urchin
- Tweedie's semaphore crab
- Twelve-root cup coral
- Twelve-scaled worm
- Twelve-tentacle parasitic anemone
- Twelve-tentacled burrowing anemone
- Twiggy black coral
- Twilled giant-turris
- Twin drupe
- Twin-crowned nudibranch
- Twinned margin shell
- Twistclaw pistol shrimp
- Twisted arc
- Twisted Caecum
- Twisted Duck Clam
- Twisted dwarf triton
- Twisted eulima
- Twisted triton
- Twisted venus
- Two layer shell
- Two-band eulima
- Two-colour nutmeg
- Two-faced dwarf-turban
- Two-groove odostome
- Two-headed beania
- Two-horned yellow crab
- Two-keel Clio
- Two-keel hairysnail
- Two-keel turrid
- Two-rib margarite
- Two-ribboned sea cucumber
- Two-spine pteropod
- Two-spined sea star
- Two-spot keyhole limpet
- Two-spot locust lobster
- Two-spot swimming crab
- Two-spot thordis
- Two-spotted bittersweet
- Two-stringed ark shell
- Two-tail vitrinella
- Two-tentacled sea cucumber
- Two-tone Amphissa
- Two-tone cup coral
- Two-tone pygmy squid
- Two-toned lobsterette
- Two-tooth barrel-bubble
- Two-tooth topsnail
- Two-toothed white snail
- Twoclaw shrimp
- Twoclaw snapping shrimp
- Twohole clutch crab
- Twospine box crab
- Twospine crangon
- Twospined arm swimming crab
- Twostripe coral shrimp
- Twotoned cardita
- Tylodina
- Type C killer whale
- Type D killer whale
- Typical edenttellina
- Typical squat lobster
- Umbilical ovula
- Umbilicate cowrie
- Umbilicate Mediterranean gibbula
- Umbilicate pheasant shell
- Umbrella corallimorpharian
- Umbrella crab
- Umbrella jellyfish
- Umbrella octopus
- Umbrella slug
- Umbrella squid
- Unadorned sea anemone
- Unarmed cranch squid
- Unarmed hermaphroditic anemone
- Unbranched Hydroid
- Uncinate cavoline
- Uncta shrimp
- Underlined fig shell
- Underwood's graphis
- Underworld spider crab
- Undulate auger
- Undulate periwinkle
- Undulate thracia
- Undulate venus
- Undulated false lucine
- Undulated Glossodoris
- Unequal arc
- Unequal nutclam
- Unequal spoonclam
- Uneven cerith
- Uneven horny sponge
- Unicolor cockle
- Unicolour dog whelk
- Unicoloured lemon sea slug
- Unicorn blunthorn lobster
- Unicorn neck crab
- Unicorn snail
- Unicorn worm
- Uniform sea urchin
- Unspotted European cowrie
- Unstable limpet
- Upright vitrinella
- Upside-down jellyfish
- Urchin carrier crab
- Urchin shrimp
- Urchin snail
- Urchin visored shrimp
- Urchin-tail mantis shrimp
- Urticina
- Uruguayan fiddler crab
- Uruguayan lobster
- Utriculoid fusiform sea cucumber
- Vaginate limops
- Vahl margarite
- Valdivia bathyal octopus
- Valdivian soft coral
- Valuable blunt-tail prawn
- Van syoc's aeolid
- Vancouver horny sponge
- Vancouver okenia
- Vancouver phoronid
- Vancouver scallop
- Vanikoro
- Vanuatu nautilus
- Vanuatu sea krait
- Variable abalone
- Variable Aphelodoris
- Variable armina
- Variable bittium
- Variable Boring Sponge
- Variable brittle star
- Variable cerith
- Variable Chelidonura
- Variable conch
- Variable coquina
- Variable cyclostreme
- Variable dwarf olive
- Variable fragile star
- Variable limpet
- Variable loggerhead sponge
- Variable mussel
- Variable neon slug
- Variable noumea
- Variable risso
- Variable seagrass shrimp
- Variable soft coral
- Variable squillid mantis shrimp
- Variable stomatella
- Variable thorny oyster
- Variable tonicia
- Variable wormsnail
- Variably banded bubble
- Varicoloured abalone
- Varicose cerith
- Varicose phyllidia
- Varicose solarelle
- Variegate Amphissa
- Variegate dovesnail
- Variegate gibbula
- Variegate keyhole limpet
- Variegate lacuna
- Variegate shore crab
- Variegate spider crab
- Variegate topsnail
- Variegate turretsnail
- Variegated carpet shell
- Variegated dove shell
- Variegated fanworm
- Variegated mitre
- Variegated pheasant
- Variegated scallop
- Variegated sea urchin
- Variegated spherical isopod
- Variegated sundial shell
- Variegated Tapes
- Variegated topshell
- Variegated tree coral
- Varius cone
- Varnished Astarte
- Varnished mussel
- Vase sponge
- Veal cone
- Vega sea cucumber
- Veiled chiton
- Veiled hairysnail
- Veiled medusa
- Veiled octopus
- Veiled Pacific chiton
- Veiled shrimp
- Veined shrimp
- Veined squid
- Velcro crab
- Velutina
- Velvet branch coral
- Velvet crab
- Velvet fan lobster
- Velvet hairy crab
- Velvet horse crab
- Velvet lobster
- Velvet octopus
- Velvet shrimp
- Velvet spider crab
- Velvet sponge
- Velvet whip lobster
- Velvety club coral
- Velvety sea star
- Venezuela diplodon
- Venice kelp crab
- Vent crab
- Vent octopus
- Vent shrimp
- Ventricose ark
- Ventricose rissoa
- Ventricose whelk
- Venus clam
- Venus comb murex
- Venus ear
- Venus flytrap sea anemone
- Venus girdle
- Venus mactra
- Venus sea fan
- Venus star club coral
- Venus' flower basket
- Veracruz caecum
- Verany's long-armed squid
- Verco's nudibranch
- Verco's Verconia
- Verill's crab
- Verill's lump coral
- Verkruze's whelk
- Vermiculated cone
- Vermillion Japanese aeolis
- Vermillion red sponge
- Vernede's tusk shell
- Verrier's Chromodoris
- Verrill's lump coral
- Verrucose thordisa
- Versluys's tree coral
- Vesicular sea slug
- Vespucci tellin
- Vexillate jopas
- Vexillate mitre
- Vexillum cone
- Vibex bonnet
- Vic Wee’s Cone
- Vicary armoured shrimp
- Victorian fiddler crab
- Victorious turban
- Vietnam cuttlefish
- Vietnamese squillid mantis shrimp
- Vigorous squat lobster
- Villepin's Cone
- Violet batissa
- Violet bittersweet
- Violet blanket octopus
- Violet moon snail
- Violet nerite
- Violet risso snail
- Violet sea slug
- Violet sea urchin
- Violet troughshell
- Violet vinegar crab
- Violet zoanthid
- Violet-band mangelia
- Violet-eyed swimming crab
- Violet-spotted anemone
- Viperine sea snake
- Virgate tellin
- Virgin cone
- Virgin mitre
- Virgin murex
- Virgin nerite
- Virginia lancelet
- Virginia marginella
- Viridis aeolid
- Viscous Sponge
- Visored shrimp
- Vitreous Arachnopusia
- Vitreous lobate comb-jelly
- Vitreous scallop
- Voigtmann's reef lobster
- Volcano barnacle
- Volcano Hypselodoris
- Volcano keyhole limpet
- Volcano sponge
- Voluminous cone
- Volute
- Volute daphnelle
- Volute whelk
- Volute-shaped olive
- Vomer conch
- Voracious tritonia
- Vornered mud crab
- Vortex margarite
- Vosnesensky's isopod
- Voss' cuttlefish
- Vovan bittersweet
- Vulgaris fish-gill isopod
- Wader tree oyster
- Wagenaar's False Plexaura
- Wagner's goblet
- Waite's snake-star
- Wakatobi boring sponge
- Walker's cowrie
- Walking anemone
- Walking dendro
- Wall sponge
- Walled cowrie
- Walsh's slippery shell
- Wampum tuskshell
- Wandering anemone
- Wandering cowrie
- Wandering hairysnail
- Wandering whelk
- Waratah anemone
- Ward's nudibranch
- Warped whelk
- Warrener
- Warrior shrimp
- Warrior swimcrab
- Wartneck piddock
- Warty Baeolidia
- Warty bobtail squid
- Warty Corallimorph
- Warty corallimorpharian
- Warty crab
- Warty cyclostreme
- Warty flatworm
- Warty frog shell
- Warty leaf-bryozoan
- Warty nudibranchia
- Warty octopus
- Warty pleurobranch
- Warty sea anemone
- Warty Sea Cucumber
- Warty sea rod
- Warty sea slug
- Warty sea wasp
- Warty seacat
- Warty sponge
- Warty starfish
- Warty swimming crab
- Warty tunicate
- Warty venus
- Warty-leg hermit crab
- Washington woodeater
- Water Mouse
- Watering pot shell
- Waterlilly roboastra
- Waterspout shell
- Waved goblet
- Waved moonsnail
- Waved nerite
- Waved volute
- Wavy Amphissa
- Wavy Astarte
- Wavy bittersweet
- Wavy Clio
- Wavy Corbula
- Wavy crassatella
- Wavy dwarf-venus
- Wavy fan shell
- Wavy lamellaria
- Wavy liocyma
- Wavy moonsnail
- Wavy sapsucking slug
- Wavy spindle shell
- Wavy turban
- Wavy-edged kellyclam
- Wavy-line Astarte
- Waxy drill
- Waxy gouldclam
- Waxy macoma
- Waxy mangelia
- Waxy miter
- Waxy solarelle
- Waxy tuskshell
- Wayward whelk
- Weakly cut nerite
- Weasel cone
- Weasel olive
- Web's cuttlefish
- Webbed flying squid
- Webbed rimula
- Webfoot octopus
- Weddell seal
- Wedding-cake venus
- Wedge piddock
- Wedge tellin
- Wedge trough shell
- Wedging sea cucumber
- Well-ribbed dove snail
- Well-threaded wentletrap
- Wellington flying squid
- Wellington nudibranch
- Wellington shrimp
- Wellington's Solitary Coral
- Wello fire coral
- Wells coral
- Wells's tritonia
- Wellsophyllia
- Wentletrap
- West African fiddler crab
- West African geryon
- West African hairy triton
- West African Manatee
- West African mangrove oyster
- West African stromb
- West Atlantic mantis shrimp
- West coast black-headed sea snake
- West Indian alvania
- West Indian awningclam
- West Indian baily shell
- West Indian cardita
- West Indian chank
- West Indian crown conch
- West Indian cup-and-saucer
- West Indian Dosinia
- West Indian dovesnail
- West Indian false cerith
- West Indian furrow lobster
- West Indian fuzzy chiton
- West Indian green chiton
- West Indian manatee
- West Indian murex
- West Indian palolo worm
- West Indian pointed venus
- West Indian prickly cockle
- West Indian ribbed chiton
- West Indian sea egg
- West Indian simnia
- West Indian starsnail
- West Indian tegula
- West Indian top shell
- West Indian vanikoro
- West Indian wormsnail
- Westatlantic white phoronid
- Westerly toothshell
- Western Atlantic brief squid
- Western Atlantic harbor seal
- Western Caecum
- Western calcareous tubeworm
- Western corbula
- Western crenate auger
- Western Dondice
- Western Gulf sandhopper
- Western king prawn
- Western mexican rangia
- Western mud nassa
- Western pea crab
- Western rock lobster
- Western school shrimp
- Western star
- Western Steller sea lion
- Western strawberry-cockle
- Western tellin
- Western tube crab
- Western turtle-headed sea snake
- Western white shrimp
- Western white slippersnail
- Whale barnacle
- Whale louse
- Whale squid
- Wharf roach
- Whelk purpura
- Whip black coral
- Whip mudworm
- Whip shrimp
- Whip-bearing bobtail
- Whip-lash squid
- Whiparm octopus
- Whiskered velvet shrimp
- White abalone
- White Acropora
- White aeolid
- White and brown Dendrodoris
- White anemone
- White Atlantic Cadlina
- White Atlantic triphora
- White baby ear
- White barnea
- White blind limpet
- White bottlebrush hydroid
- White brooding brittle star
- White burrowing anemone
- White bushy bryozoan
- White capped swallowtail
- White catworm
- White clathrina
- White cluster anemone
- White colonial phoronid
- White colonial tunicate
- White crust
- White crust tunicate
- White cylichna
- White didemnid
- White disc soft coral
- White dorid
- White dot-eyed hermit crab
- White dwarf barnacle
- White dwarf-turban
- White elbow crab
- White encrusting soft coral
- White encrusting sponge
- White eye sea spray
- White foot paua
- White frond-aeolis
- White furrow shell
- White fusiform sea cucumber
- White giant-turris
- White gibbula
- White glass shrimp
- White hammer oyster
- White henricia
- White hoof shell
- White hoofsnail
- White horny coral
- White hydroid
- White jorunna
- White keeled turrid
- White keyhole limpet
- White lamp shell
- White long-armed crab
- White mantis shrimp
- White melampus
- White miniature ark
- White moonsnail
- White nassa
- White night doris
- White northern chiton
- White philine
- White phyllidid
- White poromya
- White potworm
- White pygmy venus
- White ribbon worm
- White rock shell
- White scallop
- White sea cradle
- White sea crust
- White sea-squirt
- White semaphore crab
- White shore crab
- White slippersnail
- White smooth-horn doris
- White speck tunicate
- White speckled hermit crab
- White sponge
- White spot anemone shrimp
- White spot cucumber
- White spotted auger
- White spotted cerberilla
- White spotted colonial tunicate
- White spotted thuridilla
- White stickhydroid
- White stinging anemone
- White stony ovula
- White strawberry cockle
- White strigilla
- White striped coryphella
- White sun star
- White tangled bryozoan
- White teatfish
- White threadfish
- White tipped tentacle sea slug
- White tritoniopsis
- White trivia
- White venus
- White-and-orange-tipped nudibranch
- White-ball lamellaria
- White-band drillia
- White-band miter
- White-banded auger
- White-banded bobbit worm
- White-banded bubble
- White-banded Cerithiopsis
- White-banded Turret
- White-barred chiton
- White-beaked dolphin
- White-beard ark
- White-bordered sea slug
- White-bottomed sea cucumber
- White-crest tellin
- White-crowned calcareous tubeworm
- White-crust Cuthona
- White-dotted sea cucumber
- White-edged noumea
- White-frosted mangelia
- White-handed fiddler crab
- White-knob drillia
- White-knobbed sea cucumber
- White-line chiton
- White-line dirona
- White-line marginella
- White-lined aldisa
- White-lined cratena
- White-lined ribbon worm
- White-mouth turritella
- White-patch nautilus
- White-ridged nudibranch
- White-ringed ribbon worm
- White-sand macoma
- White-sided dolphin
- White-speckled chelidonura
- White-spot ascidian
- White-spot dovesnail
- White-spot engina
- White-spot latirus
- White-spot marginella
- White-spot miter
- White-spot periwinkle
- White-spot porostome
- White-spotted crab
- White-spotted dendronotus
- White-spotted hermit crab
- White-spotted navanax
- White-spotted nudibranch
- White-spotted octopus
- White-spotted pouched octopus
- White-striped octopus
- White-tentacle Japanese aeolis
- White-tipped nudibranch
- White-toothed cowrie
- White-V hydroid spider crab
- White's hypselodoris
- Whitebanded hermit crab
- Whitebelly prawn
- Whitecross jellyfish
- Whiteknee hermit crab
- Whiteleg shrimp
- Whitened dwarf olive
- Whitestripe chiton
- Whitestripe urchin shrimp
- Whitish nassa
- Whitley's cuttlefish
- Wholphin
- Whorled tree coral
- Wickerwork cone
- Wide aclis
- Wide front swimcrab
- Wide heart sea urchin
- Wide-coiled wentletrap
- Wide-mesh sea fan
- Wide-ribbed patella
- Widehand hermit crab
- Widemouth lamellaria
- Widemouth rocksnail
- Widest Pacific conch
- Widestripe hermit crab
- Wiggins's horny sponge
- Wild star sea pen
- Wild switch horny sponge
- Willan's chromodoris
- Willan's phyllidia
- Willemoes' tubeworm
- Willemoes's white sea pen
- Willett canoe-bubble
- Willey's halgerda
- Williams anemone
- Wilson's roburnella
- Wilson's sponge crab
- Winckworth's octopus
- Winding stair shell
- Windowpane oyster
- Windpipe caecum
- Windsock horny sponge
- Wine red aeolid
- Wine whelk
- Wine-glass hydroid
- Wine-plumed doris
- Wing's black coral
- Winged argonaut
- Winged box jellyfish
- Winged kelp crab
- Winged mime crab
- Winged stilt crab
- Winged trophon
- Wingless box crab
- Winter's razor clam
- Wire coral
- Wire coral crab
- Wire coral shrimp
- Wire sponge
- Wiry
- Wiry deep-sea shrimp
- Wiry hydroid
- Witch prawn
- Wobbly keyhole limpet
- Wonderful firefly squid
- Wonderful sea urchin
- Wonderpus
- Wonderworm
- Wondrous melibe
- Wood boring gribble
- Wood shrimp
- Wood-boring amphipod
- Wood's Little Nut Clam
- Wooden fasciolaria
- Woodward's pelagic shrimp
- Woody chiton
- Woolly lamellaria
- Worm anemone
- Worm coral
- Worm snail
- Wormreef hermit
- Wormreef porcelain crab
- Wormy anemone
- Wormy nudibranch
- Woven auger
- Woven lucine
- Woven Pacific phos
- Woven penshell
- Woven topsnail
- Woven-skinned horny sponge
- Wreath jopas
- Wright's Cantharus
- Wrinkle coral
- Wrinkle-ribbed wentletrap
- Wrinkle-wing murex
- Wrinkled Amphissa
- Wrinkled cardit
- Wrinkled cockle
- Wrinkled crab
- Wrinkled cuttlefish
- Wrinkled elbow crab
- Wrinkled fusiform sea cucumber
- Wrinkled montacutid
- Wrinkled sea star
- Wrinkled swimcrab
- Wrinkled thracia
- Wülker's flapjack octopod
- Xanthochroid egg shell
- Xantus swimcrab
- Xenia
- Xenia swimming crab
- Xenoturbella
- Yaldwyn's alpheid
- Yamasu's cuthona
- Yellow and brown scaleworm
- Yellow auger
- Yellow boring sponge
- Yellow box crab
- Yellow cave-sponge
- Yellow cerith
- Yellow clam
- Yellow Clathrina
- Yellow cluster anemone
- Yellow cone
- Yellow crust sponge
- Yellow cucumber
- Yellow cup black coral
- Yellow cup coral
- Yellow dove shell
- Yellow eggcockle
- Yellow elbow crab
- Yellow encrusting anemone
- Yellow encrusting bryozoan
- Yellow encrusting sponge
- Yellow false doris
- Yellow fanworm
- Yellow feathers
- Yellow finger marsh crab
- Yellow finger tube sponge
- Yellow flabby-sponge
- Yellow golf ball sponge
- Yellow gorgonian
- Yellow hairy sea spider
- Yellow hedgehog sponge
- Yellow latirus
- Yellow leafy sponge
- Yellow leather coral
- Yellow limpet
- Yellow line shrimp
- Yellow mangelia
- Yellow miniature cerith
- Yellow moon crab
- Yellow mouthed frog shell
- Yellow mussel
- Yellow nudibranch
- Yellow octopus
- Yellow Pacific cone
- Yellow papillae flatworm
- Yellow pencil coral
- Yellow periwinkle
- Yellow pitar venus
- Yellow platydoris
- Yellow plumed sea slug
- Yellow poromya
- Yellow porostome
- Yellow Pricklycockle
- Yellow rock crab
- Yellow roughneck shrimp
- Yellow round crab
- Yellow scroll coral
- Yellow sea slug
- Yellow sea snake
- Yellow sea squirt
- Yellow sea whip
- Yellow seacat
- Yellow shore crab
- Yellow shrimp
- Yellow social tunicate
- Yellow sponge
- Yellow spot flatworm
- Yellow spotted star
- Yellow sundial
- Yellow tree coral
- Yellow tulip
- Yellow tuskshell
- Yellow umbrella tylodina
- Yellow volute
- Yellow-bellied sea snake
- Yellow-dotted doris
- Yellow-edge Cadlina
- Yellow-fingered horny sponge
- Yellow-footed hermit crab
- Yellow-green sea squirt
- Yellow-lipped sea krait
- Yellow-margin shipworm
- Yellow-mouth top shell
- Yellow-mouthed whelk
- Yellow-spot Cadlina
- Yellow-spot scallop
- Yellow-spotted anemone shrimp
- Yellow-spotted guard crab
- Yellow-spotted sea squirt
- Yellow-tentacled galeommatid
- Yellow-tinted cowry
- Yellow-tipped nudibranch
- Yellowbanded coral shrimp
- Yellowbanded horse mussel
- Yellowfoot ‘opihi
- Yellowish brown crab
- Yellowish Cuthona
- Yellowleg pandalid
- Yellowleg shrimp
- Yepayek soft coral
- Yoka Star Turban
- Yoldia
- Yoldia macoma
- Yolk-bearer calcareous tubeworm
- York shrimp
- Yorkin Cliona
- Youthful venus
- Yoyo galeommatid
- Yucatan mathilda
- Yucatan spindle
- Yutlinux bubblegum coral
- Zaire prawn
- Zambo's murex
- Zanzibar boxer shrimp
- Zanzibar cuttlefish
- Zanzibar whip coral shrimp
- Zebra auger
- Zebra chiton
- Zebra colonial tunicate
- Zebra coral
- Zebra crab
- Zebra crown nerite
- Zebra flatworm
- Zebra hermit
- Zebra horn
- Zebra leafslug
- Zebra lebbeid
- Zebra mantis shrimp
- Zebra nerite
- Zebra periwinkle
- Zebra shrimp
- Zebra top
- Zebra volute
- Zephyr Hypselodoris
- Zigzag cowry
- Zigzag scallop
- Zimmer's sea fan
- Zip hydroid
- Zippy's octopus
- Zoanthid
- Zoned cone
- Zoned cowrie
- Zoned horn shell
- Zoned marginella
- Zoned miter
- Zoned paper bubble
- Zostera shrimp
60 ptsRare178 answersShow answersHide answers
Uncommon — only a minority of players land here.
- Abalone
- American crocodile
- American lobster
- Antarctic krill
- Baleen whale
- Beach hopper
- Black coral
- Black mussel
- Black sea cucumber
- Black sea urchin
- Bloodworm
- Blue crab
- Blue dragon
- Blue mussel
- Blue swimmer crab
- Blue-ringed octopus
- Bobbit worm
- Bowhead whale
- Box jellyfish
- Brain coral
- Brine shrimp
- Brittle star
- Brown shrimp
- California sea lion
- Chambered nautilus
- Christmas Island red crab
- Clawed lobster
- Cockle
- Coconut crab
- Colossal squid
- Comb jelly
- Common brittle star
- Common cockle
- Common cuttlefish
- Common dolphin
- Common hermit crab
- Common limpet
- Common minke whale
- Common octopus
- Common periwinkle
- Common prawn
- Common Sand Dollar
- Common sea anemone
- Common sea cucumber
- Common sea fan
- Common starfish
- Common whelk
- Conch
- Cone snail
- Coral
- Crown-of-thorns starfish
- Deep-sea lobster
- Deep-sea shrimp
- Deepsea crabs
- Deepsea squid
- Deepsea urchin
- Deepwater coral
- Deepwater octopus
- Diamondback terrapin
- Dugong
- Dumbo octopus
- Dungeness crab
- Edible crab
- Elephant seal
- European lobster
- False killer whale
- Fiddler crab
- Fin whale
- Fur seal
- Geoduck
- Ghost crab
- Ghost shrimp
- Giant anemone
- Giant clam
- Giant isopod
- Giant Pacific octopus
- Giant sea star
- Giant sea urchin
- Giant tiger prawn
- Giant tube worm
- Gooseneck barnacle
- Gray seal
- Gray whale
- Green crab
- Green mussel
- Green sea turtle
- Harbor seal
- Hard coral
- Harp seal
- Hawaiian monk seal
- Humboldt squid
- Immortal jellyfish
- Irukandji jellyfish
- Isopod
- Japanese spider crab
- King prawn
- Land crab
- Land hermit crab
- Leatherback sea turtle
- Leopard seal
- Limpet
- Lion's mane jellyfish
- Loggerhead sea turtle
- Mantis shrimp
- Marine iguana
- Mimic octopus
- Minke whale
- Mole crab
- Monk seal
- Moon jellyfish
- Mud crab
- Nautilus
- Norway lobster
- Peacock mantis shrimp
- Pearl oyster
- Penis fish
- Periwinkle
- Pilot whale
- Pink coral
- Pink shrimp
- Pistol shrimp
- Portuguese man o' war
- Purple sea urchin
- Quahog
- Razor clam
- Red coral
- Red hermit crab
- Red jellyfish
- Red king crab
- Red lobster
- Red sea cucumber
- Red sea star
- Red sea urchin
- Reef crab
- Reef shrimp
- Right whale
- Ringed seal
- Rock crab
- Saltwater crocodile
- Sand dollar
- Sandworm
- Sea anemone
- Sea angel
- Sea bunny
- Sea butterfly
- Sea cucumber
- Sea hare
- Sea krait
- Sea pig
- Sea scallop
- Sea slug
- Sea snake
- Sea spider
- Sea squirt
- Sea worm
- Shellfish
- Snow crab
- Soft coral
- Soft-shell clam
- Southern right whale
- Spider crab
- Spiny lobster
- Spotted seal
- Stone crab
- Swimming crab
- Tardigrade
- Toothed whale
- Tube worm
- Vampire squid
- Vaquita
- Whelk
- White coral
- White mussel
- White octopus
- White sea cucumber
- White sea urchin
- White starfish
- Yeti crab
30 ptsSchooler30 answersShow answersHide answers
A solid, middling pick shared with plenty of other players.
- Barnacle
- Beluga whale
- Blue whale
- Bottlenose dolphin
- Clam
- Cuttlefish
- Giant squid
- Hermit crab
- Horseshoe crab
- Humpback whale
- King crab
- Krill
- Manatee
- Mussel
- Narwhal
- Oyster
- Plankton
- Polar bear
- Porpoise
- Scallop
- Sea lion
- Sea otter
- Sea snail
- Sea urchin
- Shrimp
- Sperm whale
- Sponge
- Squid
- Starfish
- Walrus
10 ptsPlankton9 answersShow answersHide answers
The most common answer on the board.
- Crab
- Dolphin
- Jellyfish
- Killer whale
- Lobster
- Octopus
- Sea turtle
- Seal
- Whale