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Northern California Rocky Intertidal Species

Rocky intertidal species from Del Norte County to San Mateo County.

All 329

Cryptic Kelp Crab ¹
Pugettia richii

Pacific Rock Crab ²
Romaleon antennarium

Red Rock Crab ³
Cancer productus

Umbrella Crab ¹
Cryptolithodes sitchensis

Pacific Sand Crab ⁴
Emerita analoga

Grainy Hermit Crab ⁵
Pagurus granosimanus

Hairy Hermit Crab ⁶
Pagurus hirsutiusculus

Blueband Hermit Crab ⁷
Pagurus samuelis

flat porcelain crab ⁸
Petrolisthes cinctipes

Flattop Crab ⁶
Petrolisthes eriomerus

chocolate porcelain crab ⁹
Petrolisthes manimaculis

pubescent porcelain crab ¹⁰
Pachycheles pubescens

Thickclaw Porcelain Crab ¹¹
Pachycheles rudis

Bay Ghost Shrimp ¹²
Neotrypaea californiensis

Broken-back shrimp ¹³
Heptacarpus

California Spiny Lobster ¹⁴
Panulirus interruptus

Gammarid Amphipods ¹⁵
Gammaridea

Caprella ¹⁶

California Beach Flea ¹⁷
Megalorchestia californiana

Harford's Isopod ¹⁸
Cirolana harfordi

Idotea fewkesi ¹⁰

Eelgrass isopod ⁵
Idotea resecata

Seaweed Isopod ¹⁰
Idotea stenops

Blunt-tailed Isopod ¹⁸
Idotea urotoma

Rockweed isopod ¹⁹
Pentidotea wosnesenskii

Western Sea Roach ²⁰
Ligia occidentalis

Polychaetes ²¹
Polychaeta

feather duster worm ⁹
Schizobranchia insignis

serpulid worm ²²
Serpula columbiana

Spirorbis ²³

Sandcastle Worm ²⁴
Phragmatopoma californica

Fringed Filament Worm ²⁵
Dodecaceria fewkesi

Nereis ²⁶

Platynereis bicanaliculata ¹

Alitta brandti ²⁷

Eighteen-scaled Worm ²⁷
Halosydna brevisetosa

Strawberry Anemone ²⁸
Corynactis californica

Orange Cup Coral ²⁷
Balanophyllia elegans

Halcampa crypta ¹⁰

Ten-tentacled Burrowing Anemone ²⁷
Halcampa decemtentaculata

Stubby Rose Anemone
Urticina coriacea

Christmas Anemone ¹⁰
Urticina crassicornis

Moonglow Anemone ²⁷
Anthopleura artemisia

Aggregating Anemone ²⁹
Anthopleura elegantissima

Starburst Anemone ³⁰
Anthopleura sola

Giant Green Anemone ³¹
Anthopleura xanthogrammica

Brooding Anemone ¹²
Epiactis prolifera

Pink-mouth Hydroid ²⁷
Ectopleura marina

Purple Encrusting Hydrocoral ²²
Stylantheca papillosa

By-the-wind-sailor ³²
Velella velella

Coarse Sea Fir Hydroids ²⁷
Abietinaria

Ostrich-Plume Hydroids ³³
Aglaophenia

Eccentric Sand Dollar
Dendraster excentricus

Red Sea Urchin ³⁴
Strongylocentrotus franciscanus

Purple Sea Urchin ²⁴
Strongylocentrotus purpuratus

Scarlet Dwarf Sea Cucumber ⁹
Lissothuria nutriens

Stiff-footed sea cucumber ²⁷
Eupentacta quinquesemita

Orange Sea Cucumber ²⁵
Cucumaria miniata

Six-rayed stars ³⁵
Leptasterias

Rainbow Star ²⁷
Orthasterias koehleri

Sunflower Sea Star ³⁶
Pycnopodia helianthoides

Giant Pink Sea Star ⁷
Pisaster brevispinus

Giant Sea Star ³⁷
Pisaster giganteus

Ochre Sea Star ³⁸
Pisaster ochraceus

Henricia spp. ²⁸
Henricia

Pacific blood star ⁷
Henricia leviuscula

Leather Star ³⁵
Dermasterias imbricata

Bat Star ³⁵
Patiria miniata

Western Spiny Brittle Star ¹
Ophiothrix spiculata

Long-armed Brittle Star ³⁵
Amphiodia occidentalis

Esmark's brittle star ²⁷
Ophioplocus esmarki

Daisy Brittle Star ³⁵
Ophiopholis kennerlyi

Pacific Peanut Worm ³⁵
Phascolosoma agassizii

Bread-crumb Sponge ¹⁶
Halichondria panicea

Haliclona ³⁹

Suberites ⁴⁰

Sulphur Boring Sponge ⁴¹
Cliona celata

Clathria originalis ¹⁹

smooth urn sponge ¹⁰
Leucilla nuttingi

Red Ribbon Worm ²⁸
Tubulanus polymorphus

Six-lined Ribbon Worm ⁴²
Tubulanus sexlineatus

purple ribbon worm ¹⁰
Paranemertes peregrina

Pseudoceros canadensis ²⁷

Notocomplana acticola ²²

California Flatworm ²⁸
Stylochus californicus

seagrass or surfgrass ⁴³
Phyllospadix

Dead Man's Fingers ⁴⁴
Codium fragile

green spongy cushion ¹⁰
Codium setchellii

green rope ⁴⁵
Acrosiphonia coalita

Green pin-cushion alga ¹⁸
Cladophora columbiana

Sea Lettuces ⁴⁶
Ulva

Pyropia ¹⁰

Smithora naiadum ⁴⁷

Prionitis lanceolata ¹⁰

Prionitis sternbergii ⁴⁸

Sea Sacks ⁴⁹
Halosaccion glandiforme

Neogastroclonium subarticulatum ¹⁰

Plocamium oregonum ²⁸

Hymenena flabelligera ¹⁰

sea brush ²²
Odonthalia floccosa

Edited by Alison Young, some rights reserved (CC BY-SA)

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