| Acropora palmata Elkhorn coral Synonyms: staghorn coral |
| Actinodiscus sp. Disk anemone |
| Adelogorgia phyllosclera Orange gorgonian |
| Agelas conifera Brown tube sponge Synonyms: esponge |
| Aglaophenia struthionides Ostrich-plumed hydroid Synonyms: stiff-feather hydroid |
| Allopora californica Hydrocoral |
| Amphiprion bicinctus Anemonefish Range: Western Indian Ocean: Red Sea and Chagos Archipelago Synonyms: anemone fish, clown fish |
| Anarrhichthys ocellatus Wolf eel Range: Alaska to Southern California Synonyms: northern wolffish, wolf-fish, wolf-eel |
| Anisodoris nobilis Sea lemon nudibranch |
| Anthopleura elegantissima Aggregating anemone |
| Anthopleura sola Solitary anemone |
| Anthopleura xanthogrammica Green sea anemone |
| Antipathidae sp. Black coral |
| Apolemia sp. Pelagic siphonophore |
| Asterina miniata Bat sea star Synonyms: bat star, bat starfish, Patiria miniata |
| Aurelia aurita Moon jelly Synonyms: Moon jellyfish |
| Balaenoptera musculus Blue whale Range: Oceanic Synonyms: Sulphur bottom whale, Sibbald's rorqual, blue rorqual, great blue whale, great northern rorqual, Ballena azul, rorqual bleu, baleine bleue |
| Balanophyllia elegans Orange cup coral |
| Beroe forskalii Pelagic ctenophore Synonyms: comb jelly |
| Cadlina luteomarginata Yellow-marginate nudibranch |
| Callyspongia vaginalis Branching vase sponge Synonyms: esponge |
| Caulastrea echinulata Trumpet coral |
| Chrysaora colorata Purple-striped jellyfish Synonyms: purple striped jellyfish, Pelagia colorata |
| Chrysaora fuscescens Sea nettles |
| Clavelina huntsmani Lightbulb tunicate |
| Coenocyathus bowersi Colonial cup coral |
| Condylactis gigantea Giant anemone Range: Caribbean |
| Conus californicus California cone |
| Corolla calceola Pteropod Synonyms: pelagic opisthobranch, sea butterfly |
| Corynactis californica |
| Crassedoma giganteum Rock scallop Synonyms: Hinnites giganteus |
| Cyclosalpa affinis Salp Synonyms: salp chain, pelagic tunicate |
| Cyphoma gibbosum Flamingo tongue cowrie |
| Cypraea (Neobernaya) spadicea (Swainson 1823) Cypraea spadicea Chestnut Cowrie, Date Cowrie Range: California |
| Delonovolva aequalis Simnia Synonyms: simnia cowrie |
| Dendrogyra cylindrus Pillar coral |
| Dendronephthya sp. Alcyonarian soft coral |
| Dendronotus albus Dendronotus albus nudibranch Range: Kenai Peninsula in Alaska to the Los Coronados Islands off the northern end of Baja California |
| Dendronotus sp. Dendronotus nudibranch |
| Dendrophyllia californica California cup coral Range: Eastern Pacific |
| Diaulula nobilis Sea lemon Range: Alaska to Baja California |
| Diaulula sandiegensis San Diego dorid Range: British Columbia to San Diego Synonyms: san diego nudibranch |
| Doriopsilla albopunctata |
| Epiactis prolifera Proliferating anemone |
| Eudistylia polymorpha Feather duster worm |
| Flabellina iodinea Spanish shawl nudibranch Synonyms: Flabellinopsis iodinea |
| Flabellina trilineata Aeolid nudibranch |
| Gorgonia ventalina Purple sea fan Synonyms: purple gorgonean |
| Grapsus grapsus Sally lightfoot crab |
| Haemulon flavolineatum French grunt Range: Western Atlantic: Bermuda, South Carolina (USA), and northern Gulf of Mexico to Brazil; throughout the West Indies and the coasts of Central America |
| Haliotis corrugata Pink abalone |
| Haliotis fulgens Green abalone |
| Haliotis rufescens Red abalone |
| Hermissenda crassicornis Opalescent nudibranch Range: Kodiak Island, Alaska to Punta Eugenia, Baja California, Mexico; also Japan |
| Heterodontus francisci Horn shark Range: Eastern Pacific: central California, USA to the Gulf of California, and probably Ecuador and Peru Synonyms: horned shark |
| Hippodiplosia insculpta Flute bryozoan |
| Hydractinia milleri Hedgehog hydroid |
| Hypsypops rubicundus |
| Kelletia kelleti Kellet's whelk |
| Leucothea pulchra Pelagic ctenophore Synonyms: lobate comb jelly |
| Linckia columbiae Pacific comet star |
| Loligo opalescens Common squid Synonyms: market squid |
| Lophogorgia chilensis |
| Loxorhynchus crispetus Decorator crab |
| Loxorhynchus grandis Sheep crab |
| Lysmata amboinensis Cleaner shrimp |
| Lysmata californica Red Rock Shrimp |
| Macrobrachium sp. Longarm prawn Synonyms: long-armed prawn, longarm shrimp |
| Macrocystis pyrifera Giant kelp Synonyms: kelp forest, seaweed, sea weed, sea grass, sargazo gigante, harina de kelp, giant kelp, harina de la macroalga, gedroogde kelp, zeewier, reuzenkelp, braendeltang, macroalga marina, Phaeophyceae |
| Mastigia sp. |
| Megaptera novaeangliae Humpback whale Range: Oceanic Synonyms: humpbacked whale, hump back whale |
| Megathura crenulata Giant keyhole limpet |
| Metridium senile Plumose anemone |
| Mexichromis porterae Mexichromis porterae nudibranch Range: California, USA and Baja California, Mexico. |
| Mitrocoma cellularia Hydromedusa |
| Mola mola Ocean sunfish Range: Warm and temperate zones of all oceans. Eastern Pacific: British Columbia, Canada to Peru and Chile. Eastern Atlantic: Scandinavia to South Africa (occasionally western Baltic, Mediterranean). Western Atlantic: Newfoundland, Canada to Argentina Synonyms: sunfish, moonfish, mondfisch, manbow, pez luna, pesce luna |
| Muricea californica California golden gorgonian |
| Muricea fruticosa Brown gorgonian |
| Myliobatis californica California bat ray Range: Eastern Pacific: Oregon, USA to Gulf of California and the Galapagos Islands |
| Nautilus pompilius Chambered nautilus Range: Indo-Pacific Synonyms: Nautilus macromphalus, Nautilus belairensis |
| Navanax aenigmaticus Range: Pacific Coast of Central America, Caribbean, Atlantic coast of South America |
| Neotrypaea californiensis Ghost shrimp |
| Niphates digitalis Pink Vase Sponge Range: Caribbean |
| Octopus dofleini Giant Pacific octopus |
| Octopus sp. |
| Ophiothrix spiculata |
| Pachycerianthus fimbriatus |
| Pachygrapus crassipes Lined shore crab |
| Pagurus sp. Hermit crab |
| Pandalus platycaros Spot prawn |
| Panulirus interruptus Spiny lobster |
| Paracyathus stearnsi Brown cup coral |
| Paralithodes californiensis Spiny king crab |
| Parastichopus californicus California sea cucumber |
| Parastichopus parvimensis Warty sea cucumber |
| Pegea confoederata Salp Synonyms: pelagic tunicate, salp chain |
| Pelagia noctiluca |
| Pelecanus occidentalis |
| Phacellophora camtschatica Fried egg jellyfish Synonyms: fried egg jelly, egg yolk jellyfish, egg yolk jelly fish |
| Phidolopora labiata Lacy bryozoan Synonyms: Phidolopora pacifica |
| Pisaster giganteus Giant sea star Synonyms: giant starfish |
| Placiphorella velata Carnivorous chiton |
| Plerogyra sinuosa Bubble coral |
| Pleuroncodes planipes Pelagic red crab Synonyms: red crab, tuna crab, pelagic crab, pelagic tuna crab, langostilla |
| Plexaurella sp. Sea rod soft coral |
| Polinices lewisii Moon snail |
| Porolithon sp. Coralline algae |
| Portunus xantusii Xantus' swimming crab |
| Pycnopodia helianthoides Sunflower star Synonyms: sunflower starfish, giant starfish |
| Semicossyphus pulcher California sheephead wrasse Range: Eastern Pacific: Monterey Bay in California, USA to Guadalupe Island (off northern central Baja California) and Gulf of California Synonyms: sheep-head wrasse |
| Sepia officinalis Common cuttlefish Range: Eastern Atlantic, from southern Norway to southern Africa. Synonyms: Seppia meditteranea, Tintenfisch, Gemeiner, Gemeiner Tintenfisch, Sepiablęksprutte, Sepia comśn, Seiche commune, Yleinen mustekala, Seppia, Gewone zeekat, Choco |
| Serpula vermicularis Serpulid worm |
| Spheciospongia confoederata Gray moon sponge Synonyms: esponge |
| Spirobranchus spinosus Christmas tree worm Synonyms: annelid worm |
| Stenopus hispidus Banded coral shrimp |
| Strogylocentrotus franciscanus Red urchin Synonyms: red sea urchin |
| Strombus gigas Queen conch Range: Caribbean, Florida, Bahamas to Bermuda. |
| Strongylocentrotus purpuratus Purple urchin Synonyms: purple sea urchin |
| Tambja eliora Tambja eliora nudibranch Range: Baja California and Sea of Cortez, Mexico |
| Tambja fusca Tambja fusca nudibranch Range: Baja California and Sea of Cortez, Mexico |
| Tethya aurantia Orange puffball sponge |
| Thysanoessa spinifera Krill |
| Triopha catalinae Clown nudibranch Range: Alaska to Baja California |
| Tubastrea coccinea Orange cup coral |
| Urechis caupo Fat innkeeper worm |
| Urticina lofotensis Tealia anemone Synonyms: Tealia lofotensis |
| Urticina piscivora Fish-eating anemone |
| Urticina sp. |
| Velella velella By the wind sailor Synonyms: pelagic hydroid colony |
| Xenia umbellata Glove xenia |
| Xestospongia muta Barrel sponge Synonyms: esponge |