Crustaceans

Crustaceans

Crustaceans are a large group of arthropods that include crabs, shrimp, lobsters, crayfish, and barnacles. They live in oceans, freshwater, and even on land. These animals play important roles in ecosystems as both predators and prey. Crustaceans typically have hard ...

Crustaceans are animals with jointed legs and a hard outer shell, or exoskeleton, which works like armor. It is a subgroup of animals in the phylum Arthropoda.

You might have seen some at the beach or in an aquarium. Crabs, shrimp, lobsters, hermit crabs, and woodlice are all crustaceans.

They live in the deep ocean, in freshwater ri...