Search the Web with our sponsor, Overture. For a list of all the animals, click here . We've had hundreds of requests recently, so it may take a while. Crustaceans to Color Online Crustaceans are a class of animals that have a hard exoskeleton, jointed legs, and a segmented body that is bilaterally symmetrical. Most crustaceans live in water, but some live on land.
Crustaceans are the most numerous animals in the oceans, but some crustaceans live on fresh water.
There are about 30,500 species of crustaceans around the world. Crab A crab is an animal with a crusty shell. There are marine and land species of crabs. Crayfish Freshwater crustaceans with four pairs of walking legs. Krill Small crustaceans that are eaten by many animals, including baleen whales.