(1) Over 200 species of micro-organisms, fish, crustaceans, polychaetes, echinoderms, coelenterates , and molluscs have been identified in the vent areas.(2) Surfers more often encounter free-floating coelenterates such as the true jellyfish, Portuguese man-of-war, and box jellyfish.(3) Throughout the wreck dive we have been shadowed by thousands of coelenterates , drifting by like a slow hail of souls.(4) Seabather's eruption occurs when a person is exposed to the larvae of certain coelenterates .(5) Some Late Precambrian Ediacaran fossils bear strong resemblances to colonial coelenterates called sea pens.