Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea. There are approximately 1600 extant species which are found throughout the world's oceans.
Starfish are carnivores that are about 4-9 inches long and weigh up to 11 lbs. Starfish live up to 35 years in the wild. Sea stars have no brains and no blood. Their nervous system is spread through their arms and their “blood” is actually filtered sea water.
Starfish are carnivores that are about 4-9 inches long and weigh up to 11 lbs. Starfish live up to 35 years in the wild. Sea stars have no brains and no blood. Their nervous system is spread through their arms and their “blood” is actually filtered sea water.