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.Know More
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.Learn more about Starfish
Starfish can reproduce either sexually or asexually. Both male and female starfish exist, though they are externally indistinguishable from each other. They breed by releasing eggs and sperm into the water. The sperm fertilizes the eggs, and the resultant larvae eventually settle on the ocean floor to grow.Full Answer >
Starfish do not have bones, but instead have a series of hard plates that provide structure and support to their bodies. Starfish and other critters like them are called echinoderms, or marine invertebrates, which are tailed, finned animals that have backbones — they are not actually fish at all.Full Answer >
Most starfish, also known as sea stars, eat by prying open the shells of prey such as clams or oysters with their arms, pushing their stomachs out their mouths and into the prey's shell, partially digesting the animal and then pulling their stomachs back into their mouths. Starfish that don't have suction disks swallow prey whole and afterwards eject undigested parts.Full Answer >
Starfish can live an average of 35 years in the wild. Their regenerative abilities contribute to their long lifespan. Vital organs are located in the arms, allowing a starfish to survive even if most of the body is destroyed.Full Answer >