Atlantic Marine Life
| Aeolis, Dwarf Balloon | Eubranchus pallidus |
| Aeolis, Graceful | Flabellina gracilis |
| Aeolis, Red-finger | Flabellina verrucosa rufibranchialis |
| Aeolis, Salmon | Flabellina salmonacea |
| Ancula, Atlantic | Ancula gibbosa |
| Anemone, Orange-striped | Haliplanella lineata |
| Anemone, Painted | Urticina felina |
| Anemone, Short Plumose | Metridium senile |
| Anemone, Silver-spotted | Aulactinia stella |
| Angelwing, False | Petricola pholadiformis |
| Ark, Blood | Anadara ovalis |
| Ark, Transverse | Anadara transversa |
| Astarte, Smooth | Astarte castanea |
| Astarte, Wavy | Astarte undata |
| Awningclam, Boreal | Solemya borealis |
| Bamboo-worm, Collared | Clymenella torquata |
| Barnacle, Bay | Balanus improvisus |
| Barnacle, Crenate | Balanus crenatus |
| Barnacle, Ivory | Balanus eburneus |
| Barnacle, Northern Rock | Semibalanus balanoides |
| Barnacle, Pelagic Goose | Lepas anatifera |
| Barnacle, Rough | Balanus balanus |
| Basketsnail, Three-lined | Nassarius trivittatus |
| Bittium, Alternate | Bittiolum alternatum |
| Bloodworm, Two-gilled | Glycera dibranchiata |
| Brittle Star, Daisy | Ophiopholis aculeata |
| Brittle Star, Dwarf | Amphipholis squamata |
| Bryozoan, Kelp Encrusting | Membranipora membranacea |
| Bryozoan, Leafy | Flustra foliacea |
| Bubble, Solitary | Haminoea solitaria |
| By-the-wind Sailor | Velella velella |
| Cadlina, White Atlantic | Cadlina laevis |
| Chiton, Mottled Red | Tonicella marmorea |
| Chiton, Northern Red | Tonicella rubra |
| Chiton, White Northern | Ischnochiton albus |
| Comb Jelly, Beroe's Common | Beroe cucumis |
| Comb Jelly, Sea Grape | Pleurobrachia pileus |
| Crab, Atlantic Lyre | Hyas araneus |
| Crab, Atlantic Rock | Cancer irroratus |
| Crab, European Green | Carcinus maenas |
| Crab, Jonah | Cancer borealis |
| Cup-and-saucer, Striate | Crucibulum striatum |
| Cyclocardia, Northern | Cyclocardia borealis |
| Dogwinkle, Atlantic | Nucella lapillus |
| Dorid, Barnacle-eating | Onchidoris bilamellata |
| Doris, Hairy Spiny | Onchidoris pilosa |
| Dovesnail, Lunar | Astyris lunata |
| Drill, Thick-lip | Eupleura caudata |
| Dwarf-tellin, Northern | Tellina agilis |
| Fiddler, Atlantic Marsh | Uca pugnax |
| Fiddler, Atlantic Sand | Uca pugilator |
| Flatworm, Speckled | Notoplana atomata |
| Gribble, Northern | Limnoria lignorum |
| Gunnel, Rock | Pholis gunnellus |
| Hermit, Acadian | Pagurus acadianus |
| Hermit, Atlantic Hairy | Pagurus arcuatus |
| Hermit, Longwrist | Pagurus longicarpus |
| Hiatella, Arctic | Hiatella arctica |
| Hopper, Pink Beach | Maera danae |
| Horsemussel, Northern | Modiolus modiolus |
| Horseshoe Crab, Atlantic | Limulus polyphemus |
| Hydromedusa, Whitecross | Staurophora mertensi |
| Isopod, Baltic | Idotea baltica |
| Isopod, Sharp-tailed | Idotea phosphorea |
| Jackknife-clam, Atlantic | Ensis directus |
| Jelly, Atlantic Moon | Aurelia aurita |
| Jelly, Lion's Mane | Cyanea capillata |
| Jingle, Common | Anomia simplex |
| Lacuna, Wide | Lacuna vincta |
| Limpet, Tortoiseshell | Tectura testudinalis |
| Lineus, Red | Lineus ruber |
| Lobster, American | Homarus americanus |
| Lugworm, Northern | Arenicola marina |
| Macoma, Baltic | Macoma balthica |
| Margarite, Northern Rosy | Margarites costalis |
| Margarite, Spiral | Margarites helicinus |
| Mite, Red Velvet | Neomolgus littoralis |
| Mole Crab, Atlantic | Emerita talpoida |
| Moonsnail, Lobed | Neverita duplicata |
| Nudibranch, Bushy-backed | Dendronotus frondosus |
| Nudibranch, Shag-rug | Aeolidia papillosa |
| Onchidoris, Fuzzy | Onchidoris muricata |
| Orange Tunicate | Lissoclinum aureum |
| Oyster Drill, Atlantic | Urosalpinx cinerea |
| Oyster, Eastern | Crassostrea virginica |
| Pelicanfoot, American | Aporrhais occidentalis |
| Periwinkle, Common | Littorina littorea |
| Periwinkle, Rough | Littorina saxatilis |
| Periwinkle, Smooth | Littorina obtusata |
| Piddock, Great | Zirfaea crispata |
| Puncturella, Diluvian | Puncturella noachina |
| Quahog, Northern | Mercenaria mercenaria |
| Quahog, Queen | Arctica islandica |
| Razor-clam, Atlantic | Siliqua costata |
| Ribbon Worm, Milky | Cerebratulus lacteus |
| Sand Dollar, Common | Echinarachnius parma |
| Sandworm, Iridescent | Neanthes virens |
| Scaleworm, Painted Fifteen-paired | Harmothoe imbricata |
| Scaleworm, Tufted Twelve-paired | Lepidonotus squamatus |
| Scallop, Bay | Argopecten irradians |
| Scallop, Sea | Placopecten magellanicus |
| Scud, Tide-pool | Gammarus oceanicus |
| Sculpin, Shorthorn | Myoxocephalus scorpius |
| Sea Cucumber, Orange-footed | Cucumaria frondosa |
| Sea Grape, Orange | Molgula citrina |
| Sea Star, Forbes' | Asterias forbesi |
| Sea Star, Northern | Asterias rubens |
| Sea Urchin, Green | Strongylocentrotus droebachiensis |
| Shipworm, Common | Teredo navalis |
| Shipworm, Gould's | Bankia gouldi |
| Shrimp, Sevenspine Bay | Crangon septemspinosa |
| Skate, Little (Egg Case) | Leucoraja erinacea |
| Skate, Winter (Egg Case) | Leucoraja ocellata |
| Skeleton Shrimp | Caprella spp. & Aeginina spp. |
| Skenea, Flat | Skeneopsis planorbis |
| Slippersnail, Common Atlantic | Crepidula fornicata |
| Slippersnail, Eastern White | Crepidula plana |
| Softshell-clam | Mya arenaria |
| Softshell-clam, Truncated | Mya truncata |
| Spaghetti-worm, Potter | Amphitrite figulus |
| Sponge, Bread Crumb | Halichondria panicea |
| Sponge, Eyed Finger | Haliclona oculata |
| Sponge, Purple Encrusting | Haliclona permollis |
| Sponge, Yellow Boring | Cliona celata |
| Spotted Moonsnail, Northern | Euspira triseriata |
| Star, Atlantic Blood | Henricia sanguinolenta |
| Sun Star, Northern | Solaster endeca |
| Surfclam, Atlantic | Spisula solidissima |
| Synaptas | Leptosynapta spp. |
| Tagelus, Stout | Tagelus plebeius |
| Trumpetworm, Gould's | Pectinaria gouldi |
| Tubeworm, Sinistral Spiral | Spirorbis spirorbis |
| Tunicate, Orange Sheath | Botrylloides violaceous |
| Wedgeclam, Arctic | Mesodesma arctatum |
| Wentletrap, Brown-band | Epitonium rupicola |
| Whelk, Channeled | Busycotypus canaliculatus |
| Whelk, Knobbed | Busycon carica |
| Whelk, Stimpson | Colus stimpsoni |
| Whelk, Ten-ridged | Neptunea lyrata decemcostata |
| Whelk, Waved | Buccinum undatum |
| Worm, Common Broom | Pherusa affinis |