The image shown is a representative illustration and does not depict every individual animal in this category.
Total number of species: 1900
Starfish, also known as sea stars, are marine invertebrates found in oceans worldwide, from shallow coastal waters to deep-sea environments. They are known for their radial symmetry, typically with five arms, though some species have many more. Using a unique water vascular system, starfish move with hundreds of tiny tube feet and can cling strongly to surfaces. Many species are active predators, feeding on mollusks like clams and mussels by prying open their shells.