Because it doesn't have a back bone.
Some species of sea stars, such as the Brown Serpent Sea Star and the Blue Sea Star, are classified as detritivores that feed on decomposing organic matter and therefore contribute to decomposition. Many other species are predators though, that feed on oysters, clams, snails, mollusks, or any other prey too slow to avoid the sea stars.
Some species of sea stars, such as the Brown Serpent Sea Star and the Blue Sea Star, are classified as detritivores that feed on decomposing organic matter and therefore contribute to decomposition. Many other species are predators though, that feed on oysters, clams, snails, mollusks, or any other prey too slow to avoid the sea stars.
star
A sea star is called a sea star simply because of where it lives (the sea) and what it looks like (a star), simple!
I think their classified as reptiles.
It can be classified early in its lifecycle and classified as a different type of star as it ages.
Our sun is a star,
Our sun is a star,
no, a sea star is a vertebrate!
the sunflower sea star
In different groups