Nudibranchs

Barnacle Nudibranch
Onchidoris bilamellata

California Berthella
Berthella californica

Clown Dorid
Triopha catalinae

Cockerell's Dorid
Limacia cockerelli

Diamondback Nudibranch
Tritonia festiva

Dubious Dorid
Palio dubio

Freckled Pale Sea Lemon
Peltodoris lentigonosa

Giant Nudibranch
Dentronotus iris

Golden Dirona
Dirona aurantia

Heath's Dorid
Geitodoris heathi

Hooded Nudibranch
Melibe leonina

Hudson's Dorid
Acanthadoris hudsoni

Leopard Dorid
Diaulula sandiegensis
 

Monterey Sea Lemon
Anisodoris montereyensis

Nanaimo Nudibranch
Acanthodoris nanaimoensis

Noble Dorid  (aka Noble Sea Lemon)
Peltodoris nobilis

Opalescent Nudibranch
Hermissenda crassicornis

Papillose Horned Dorid (aka Sandalwood Nudibranch)
Acanthodoris pilosa

Red Dendronotus
Dentronotus rufus

Red Flabellina
Flabellina trophina

Shaggy Mouse Aeolid
Aeolidia papillosa

Spotted Aglajid
Aglaja ocelligera
 

Striped Nudibranch
Armina californica

Variable Dendronotid
Dendronotus diversicolor

White and Orange Tipped Nudibranch
Janolus fuscus
 

White-Lined Dirona
Dirona albolineata

Yellow Horned Dorid
Acanthodoris lutea

Yellow Margin Dorid
Cadlina leuteomarginata

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Octopus and Squid

Giant Pacific Octopus
Octopus dofleini

Opalescent Squid
Loligo opalescens

Red Octopus
Octopus rubescens

Stubby Squid
Rossia pacifica

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Snails

Blue Topsnail
Calliostoma ligatum

Lewis' Moonsnail
Euspira lewisii

Leafy Hornmouth
Ceratastoma foliatum

Oregon Triton  (Hairy Triton)
Fusitriton oregonesis

Frilled Dogwinkle
Nucella lamellosa

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Clams, Oysters, Scallops, and other bivalves

Fat Gaper Clam
Tresus capax

Geoduck
Panopea abrupta

Green False Jingle
Pododesmus macrochisma

Heart Cockle
Clinocardium nuttallii

Rock Scallop
Crassadoma gigantea

Rough Piddock Clam
Zirfaea pilsbryi

 Spiny Pink Scallop
Chlamys hastata

Smooth Pink Scallop
Chlamys rubida

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Chiton

Lined Chiton
Toniccela liniata

Gumboot Chiton
Cryptochiton stelleri

Merten's Chiton
Lepidozona mertensi

Three Rib Chiton
Lepidozona trifida

Hind's Mopalia
Mopalia hindsii

Northern Hairy Chiton
Mopalia kennerleyi

Mossy Chiton
Mopalia muscosa

Woody Chiton
Mopalia lignosa

Red Flecked Mopalia
Mopalia spectabilis

Swan's Mopalia
Mopalia swansi

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Limpets

Corded White Limpet
Niveotectura funiculata

Fenestrate Limpet
Tectura fenestrata

Rough Keyhole Limpet
Diadora aspera

Whitecap Limpet
Acmaea mitra

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