Fred Bavendam / California Sea Cucumber (Parastichopus californicus) underwater, Vancouver Island, British Columbia, Canada

Jeff Rotman / Mouth of a California Sea Cucumber (Parastichopus californicus). Vancouver Island, British Columbia, Canada, North Pacific Ocean

Fred Bavendam / Sea Star (Mediaster aequalis), California Sea Cucumber (Parastichopus californicus) and Red Sea Urchin (Strongylocentrotus franciscanus), British Columbia, Canada

Fred Bavendam / Warty Sea Cucumber (Parastichopus parvimensis) Ochre Sea Star (Pisaster ochraceus) Aggregating Anemone (Anthopleura elegantissima), Channel Islands National Marine Sanctuary, California

Fred Bavendam / California Sea Cucumber (Parastichopus californicus) pair, underwater, Vancouver Island, British Columbia, Canada

Flip Nicklin / California Sea Cucumber (Parastichopus californicus) group, Mollusks, Anemones and fish, Clayoquot Sound, Vancouver Island, British Columbia, Canada

Shane Gross / California sea cucumber (Parastichopus californicus) standing upright in spawning position, Prince William Sound, Alaska, USA, Pacific Ocean.

Shane Gross / Longfin gunnel (Pholis clemensi) hiding under a California sea cucumber (Parastichopus californicus), Vancouver Island, British Columbia, Canada, Pacific Ocean.

Claudio Contreras / Impatient sea cucumber (Holothuria impatiens), Botella Point, Gulf of California (Sea of Cortez), Mexico, August