The Chiton is a marine mollusk that has an oval flattened body with a shell of overlapping plates.

Chitons are mainly found in shallow water, often under rocks and other shells, but several genera can be found in water as deep as 5,000 ft.. They become active at twilight and move around very slowly in search of food. Most are grazers, and with a multi-toothed radula, they can feed on small algae and other tiny organisms. Some are actively carnivorous, feeding on small crustaceans by smothering them with the girdle. Info Source