As of May 2014, starfish are considered to be threatened. Also known as sea stars, these marine animals are easily preyed upon because they are unable to move quickly. Their underwater predators include fish, rays, crabs and sharks.
The shoreline is equally problematic for starfish, where their predators are marine birds as well as humans who may seek to take home an oceanic souvenir. Pollution in recent years has also played a role in the decline in the number of starfish.
Starfish live in oceans worldwide and are generally comprised of a center disk with five arms. They move about with the use of a hydraulic water vascular system rather than a jointed skeleton.