Sea stars (also known as starfish) are spiny, hard-skinned animals that live on the rocky sea floor. Starfish are NOT fish; they are echinoderms. Sea stars move very slowly along the sea bed, using hundreds of tiny tube feet. There are over 2,000 different species of sea stars worldwide.
Starfish are carnivores (meat-eaters). They eat clams, oysters, coral, fish, and other animals. They push their stomach out through their mouth (located on the underside of the sea star) and digest the prey.
Most sea stars have five arms. Starfish do not have a brain; they have a simple ring of nerve cells that moves information around the body. Eyespots (primitive light sensors) are at the tip of each arm. If a sea star’s arm is cut off, it will regenerate (regrow)