The tough, leathery skin of a starfish is covered with very short spines. In the center of their bodies are disk-like buttons. Through these disks they draw in or push out sea water. The disks on the underside act as mouths. The eyes are at the tips of their arms and are protected by a circle of spines.
Starfish can also eat by taking food into their mouths in the ordinary way. They can also replace broken arms. In fact, they may even grow a whole new body from one arm. There should be at least on starfish in Ripley’s “Believe it or not” museum!