A beachcomber's find can include a variety of items, such as seashells, STARFISH, shells, CORAL, CONCH, and concs. Seashells are the hard, protective outer layer of mollusks, which are marine animals. STARFISH are sea creatures with five arms that live on the ocean floor. Shells are the hard, protective outer layer of certain animals, such as snails and turtles. CORAL is a type of rock-like material made up of the skeletons of tiny marine animals. CONCH is a large, spiral-shaped SHELL found in tropical waters. Concs are small, round shells found in shallow waters.