Crustaceans (from Latin word "crustacea" meaning: "those with shells" or "crusted ones") are mandibulatearthropods that are traditionally a part of the paraphyleticsubphylumCrustacea (). Crustaceans are mainly aquatic, including decapods (shrimps, prawns, crabs, lobsters, and crayfish), seed shrimps, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, opossum shrimps, amphipods and mantis shrimp.
