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Ulva sp.
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Sea Lettuce: bright green, thin, leafy sheets; a favorite food of chitons, limpets, sea hares, etc. |
Egregia laevigata
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Feather-boa kelp: flat-strap stem, numerous small leafy blades perpendicular to stem, only some leaves with floats. Home of Seaweed Limpet |
Macrocystis pyrifera
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Giant Bladder Kelp: round stem, with large floats that spiral around stem, each with large flat, ripple-surfaced leaf. keystone species in CA
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Ralfsia pacifica
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Tar spot algea: Dark brown to black, very flat patches on rocks, common to rocks in high-tide zone
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Phyllospadix torreyii
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Surf Grass: flowering plant with long, bright green hair-like strands, seen far out near water line (low-tide zone), has roots (no holdfast)
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Anthopleura sp.
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Sea Anemones - bits of rock and shell attached, contain stinging cells (nematocysts), green due to zooxanthelae
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Phragmatopoma californica
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Sand Castle Worm - looks like sandy honeycomb, colonies of tubes plastered together with worm mucus |
Nutallina californica
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Chiton - rocky shores, distinctive brown-and-cream markings, light brown girdle with dark brown bristles, long oval shape, homing behavior |
Collisella sp.
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Rock limpet - smaller, homing behavior, excavate rock with radula, leave when tide comes in, leave mucus trail |
Notoacmaea insessa
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Seaweed Limpet - chestnut brown snail, tall-peaked found only on egregia |
Serpulorbis squamigerous
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Scaled-Worm Snail - big bunch of worm tubes massed together, carries black snail and an operculum |
Cthamalus fissus
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Brown Buckshot Barnacle - tiny clusters of volcano-like shells on rocks, valves create a "t" when open
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Pollicipes polymerus
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Gooseneck barnacle - clusters of white claws, compete with mussels for space, filter feeders, higher up on large rocks |
Pagurus samuelis
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Hermit Crab - not true crab
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Olivella biplicata
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Purple Olive Snail - purple to brownish color, smooth |