That usually means they're dead.....
starfish doesn't have any hard shell to protect itself but it does release poisonous stuffs
They get hard and brittle when they dry out.
starfish are aquatic, so for its entire life i guess
no because a starfish has a hard shell and can never die
no their actually kinda hard
hard and bumpy
Starfish have limbs so that they can wrap them around their prey(mostly clams,mussels, etc.) and hold onto them entil they can open the prey up and eat it.
there are probably 100 diffrent kinds of starfish around the world
No, starfish do not have scales. They have a hard, calcareous exoskeleton composed of tiny plates called ossicles. These ossicles provide structure and protection to the starfish's body.
The function of the ambulacral groove on a starfish is to open the shells of bivalves. It also hold the tubed feet of the starfish.
No. A starfish has a hard shell and its inside is only organs. To be considered a vertebrate the starfish would need a spine and an internal skeleton (not to mention a head). They are, therefore, classified as invertebrates.
As an adaptation, starfish have saponins in their body walls, which are very unpleasant tasting to predators. Tropical species of starfish also have armor and spines as their protection. And thirdly, starfish have the ability shed and regenerate their limbs.