Porifera

• Haliclona ecbasis • Purplish intertidal subtidal sponge • Worldwide distribution

porifera Porifera

• Suberites • Myxilla incrustans sp. • Rough • Often on sponge shells of • Can deter hermit predators like crabs, starfish and subtidal

Cnidaria

• Haliclystus salpinx • Pleurobrachia bachei Stalked jellyfish • Sea gooseberry • 3 cm • Predator, 1.5 cm • Found commonly diameter, tentacles on eelgrass, rock, up to 15 cm long and algae. • Match the color of their substrate

1 Platyhelminthes

• Kaburakia excelsa • Rossia pacifica • Giant leaf flatworm • One of the largest • Stubby marine flatworms • subtidal (16-370 m) • Band of eyespots around entire margin, • Sometimes swims negatively phototactic. in shallow water at • Mid-intertidal to subtidal • Under rocks, among night

Mollusca Mollusca

• Enteroctopus dofleini • Octopus • rubescens • Largest on earth • Red octopus • Upto 150 pounds, 23 • Intertidal to 120 m feet long

Mollusca Mollusca

• Onchidella borealis • Hermissenda • Leather “” crassicornis • Intertidal, has lungs • instead of gills • Carnivore, and • Spends a lot of time sometimes a cannibal out of water • Aggressive, if two meet especially in caves “fights” occur with lunging and biting

2 Mollusca Mollusca

• californica • albolineata • nudibranch • White lined dorina • Mostly subtidal to • Intertidal to 37m 230 m

Mollusca Mollusca

• Archidoris • Anisodoris nobilis montereyensis • sea lemon • False sea lemon • Can be up to 26 cm • penetrating, fruity odor, which may be used to fend off predators

Mollusca Mollusca

• Hopkinsia • Laila cockerelli rosacea • Cockerell’s • Hopkin’s rose nudibranch • Low intertidal to • Subtidal to 6m intertidal • Feeds on a rose colored bryozoan

3 Mollusca Mollusca • rufescens • red • Elysia • The swimming veliger larvae chew on , hedgpethi which releases GABA (gamma-aminobutyric acid) • Hedgpeth’s • This chemical induces the veligers to settle and sea hare metamorphose into juveniles. The abalone scrapes only the surface off • Related to the the coralline algae, so it “leaves that actually benefits the algae. • The obtains a red dye crawl” (rufescin) from the algae, which it incorporates into its shell for the pink color. The color probably helps camouflage the abalone from predators such as octopus

Mollusca Arthropoda

• Euspira lewisii • Kelp crab • Moon • one of the largest to be found • Pugettia intertidally in the Northwest • It does not usually stay inside the gracilis shell long because it cannot breathe. • It crawls across sandflats and mudflats with its huge foot partly extended in front of the shell like a snowplow, pushing through the sediments in search of .

Echinodermata Ochre starfish

• Pycnopodia helianthoides • Sunflower star • Voracious predator • http://www.youtube.c om/watch?v=i0_jCM Ygwyo • http://www.youtube.c om/watch?v=Tys0w 3CgApQ • http://www.youtube.c om/watch?v=ALaMo S_vvNE

4 Echinodermata Echinodermata

• Strongylocentrotus franciscanus • Red sea urchin • Parastichopus • these urchins live over 100 years, and found some near Vancouver californicus Island that may be 200 years old • A prime food for sea otters. • Harvested for • http://www.youtube.com/watch?v=MXQF7dhVDSY&feature=related • http://www.youtube.com/watch?v=b44_-bxr07w sale in Asia

Cnidaria

• Anthopleura ellegantissima Lower intertidal • Aggregating anemone • Intertidal • Algal symbionts

Purple sea urchin

Middle intertidal

5 Mytilus californianus Gooseneck barnacles

Nucella dog Dogwinkle

Tegula snail Balanus barnacle

6 Owl limpet

Upper intertidal

Limpets, periwinkles, brown Arthropoda barnacles • Pachygrapsus crassipes • Lined shore crab • intertidal

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