Water fleas, wood lice and barnacles belong to the group

Water fleas, wood lice, and barnacles belong to the group Crustacea. Crustaceans are a large group of arthropods that live in aquatic environments, and they include familiar creatures such as crabs, lobsters, and shrimp. They have two pairs of antennae and two or three pairs of mouthparts, and their bodies are covered by a hard exoskeleton. Water fleas are small crustaceans that live in freshwater, wood lice are crustaceans that live on land, and barnacles are crustaceans that live attached to rocks, boats, and other surfaces in the ocean. Crustaceans play an important role in aquatic ecosystems as both predators and prey, and they are also used as a food source for humans.