Acarnus erithacus

Red Volcano Sponge

Acanthancora cyanocrypta

Cobalt Sponge

Tethya californiana

Orange Puffball Sponge

Hippodiplosia insculpta

Fluted Bryozoan

Diaperoforma californica

Southern Staghorn Bryozoan

Phidolopora pacifica

Lacey Bryozoan

Membranipora serrilamella

Kelp Bryozoan

Paracyathus stearnsii

Brown Cup Coral

Balanophyllia elegans

Orange Cup Coral

Corynactis californica

Strawberry Anemone

Pachycerianthus fimbriatus

Tube Dwelling Anemone

Metridium farcimen

Giant White Anemone

Urticina lofotensis

White-Spotted Rose Anemone

white spots on column

Urticina felina

Painted Rose Anemone

Urticina piscivora

Fish-eating Anemone

solid, smooth burgundy column with white or red tentacles

Stylaster californica

California Hydrocoral

Aplidium spp.

Colonial Tunicate

Clavelina huntsmani

Lightbulb Tunicate

Cystodytes lobatus

Lobed Tunicate

Didemnum carnulentum

Colonial Tunicate

Styela montereyensis

Stalked Tunicate

Diopatra ornata

Ornate Tube Worm

Dodecaceria spp.

Colonial Tube Worms

Eudistylia polymorpha

Feather Duster Worm

Cryptolithodes sitchensis

Umbrella Crab

Mimulus foliatus

Foliate Kelp Crab

has a squarish carapace that is usually not camoflaged, usually shows aggression, large chellipeds

Pugettia richii

Cryptic Kelp Crab

usually red algae on spiny carapace, red legs with white bands, and tips of claws and legs are white

Cancer spp.

Rock Crabs

Loxorhynchus crispatus

Masking Crab

Loxorhynchus grandis

Sheep Crab

largest crab, inflated/oval carapace with few epibionts, numerous large spines, rostal spines are strongly curved downwards

Idotea spp.

Kelp Isopod

Patiria miniata

Bat Star

Henricia spp.

Blood Stars

Orthasterias koehleri

Rainbow Star

Pisaster giganteus

Giant Spined Star

blue rings around spines

Pisaster ochraceus

Ochre Star

orange, purple or yellow brown color with white spines that form a pentagon in the center

Pisaster brevispinus

Short Spined Star

uniform pink color

Pycnopodia helianthoides

Sunflower Star

Dermasterias imbricata

Leather Star

Strongylocentrotus franciscanus

Red Sea Urchin

Strongylocentrotus purpuratus

Purple Sea Urchin

Ophioplocus esmarki

Brittle Star

Parastichopus californicus

California Sea Cucumber

regular large spines

Parastichopus parvimensis

Warty Sea Cucumber

few, irregular spines and has black dots

Crassadoma gigantea

Rock Scallop

Cryptochiton stelleri

Gumboot Chiton

Tonicella spp.

Lined Chitons

Calliostoma annulatum

Purple-ringed Top Snail

Calliostoma ligatum

Blue-top Snail

Calliostoma canaliculatum

Channeled top Snail

Chlorostoma brunnea

Brown Turban Snail

Chlorostoma montereyi

Monterey turban Snail

Promartynia pulligo

Dusky Turban Snail

Kelletia kelletii

Kellet's Whelk

Lithopoma gibberosa

Red Turban Snail

bright red when new, but gets covered in epibionts quickly, operculum is white and smooth

Mitra idae

Ida's Miter

Euspira lewisii

Lewis's Moon Snail

Megathura crenulata

Giant Keyhole Limpet

Serpulorbis squamigerus

Scaled Worm Snail

Haliotis rufescens

Red Abalone

Cypraea spadicea

Chestnut cowry

Aplysia californica

California Sea Hare

Doriopsilla albopunctata

White-spotted Sea Lemon

Peltodoris nobilis

Noble Sea Lemon