Question

Describe the habits, habitat and external characters of starfish.

Answer 1

Echinoderms, including starfish, maintain a delicate internal electrolyte balance that is in equilibrium with sea water. This means that it is only possible for them to live in a marine environment and they are not found in any freshwater habitats. Starfish species inhabit all of the world's oceans.

Phylum: Echinodermata

Class: Asteroidea; De Blainville, 1830