Purple urchin

Small barnacle

Angelic tooth snail

Thatchroof barnacle (Tetraclita)

Doris’s nudibranch

Purple sea urchin

sunstar

Heliaster, the sunstar, crash in 1978, now returning

Lumpy claw crab

Swimming clam

Mussel

Black chiton

Twin-spot octopus

Small olive snail

Brown carpet anemone

Brown carpet anemone

anisotremusSonoran goby

Gulf opaleyeHalichoeres

Red algae

Sea slug

Hypsoblennius gentilis

Malacoctenus gigas

clingfish

Tadpole clingfish

Paraclinus siniSpotted sand bassParamaculatus fasciatus

Tomicodon boelkii

Cleaning bullseye puffers (“botete”)

Petrolisthes (porcellain crab)

Pencil urchin

Purple urchin

Snapping shrimp (or pistol shrimp)

Giant spiny black brittle star

Ringed brittle star

Bottle sea cucumber (B. impatiens or arenicola)

Thatch roof barnacle

Tube worms or tube snails

White-cored sponge covered with algae

Breadcrumb sponge (Porifera)

tunicates

Golfball sponge

Fireworms

Palythoa ignota, brown carpet anemone, closed

Palythoa ignota, brown carpet anemone, open polyps

Samurai hydroid

Female and male medusaegonophores

Clearings with and without hydroids hydroid super-glued to rock

Hydroid clearings on rock (pox)

Beach pill bugTylos punctatos (isopod that scavenges on dead stuff at highest tideline) Zone 1 indicator

Zoned fan algae

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Vaquita, the harbor porpoise, Phocoena sinusendemic to (lives only in) Northern Gulf of CaliforniaRare (100-300 individuals left), endangered