Very difficult to see at the time I took the picture, this is a close-up of a purple sea urchin (Strongylocentrotus purpuratus) that was wedged beneath the rock near where I spotted the tube worms!
California Sea Cucumber (Parastichopus californicus), I'm pretty sure.... But any ID help would be awesome! (Sorry for the poor picture quality!)
An Orange Sea Cucumber (Cucumaria miniata) ...or possibly a California Sea Cucumber? Any help with ID would be much appreciated!
Echinoderms (Phylum Echinodermata from Greek, ἐχῖνος, echinos – "hedgehog" und δέρμα, derma – "skin") are a phylum of marine animals. The adults are recognizable by their (usually five-point) radial symmetry, and include such well-known animals as starfish, sea urchins, sand dollars, and sea cucumbers. Echinoderms are found at every ocean depth, from the intertidal zone to the abyssal zone. The phylum contains about 7000 living species, making it the second-largest grouping of deuterostomes (a superphylum), after...