The crustaceans are a group of marine life that includes crabs lobsters and shrimp which are some of the most important marine life to humans. Oppla culinary event at crustacean celebrate with us as chef helene is being honored for chef of the year at ppla food fares 40th anniversary. Crustacean any member of the subphylum crustacea phylum arthropoda a group of invertebrate animals consisting of some 45000 species distributed worldwide crabs lobsters shrimps and wood lice are among the best known crustaceans but the group also includes an enormous variety of other forms without popular names. Woodlouse or slater a land living crustacean crustaceans make up a very large group of the arthropods which include the crabs lobsters crayfish shrimp krill barnacles brine shrimp copepods ostracods and mantis shrimp