GENERAL HISTOLOGY

Detailed explanation-1: -Starfish are also known as asteroids due to being in the class Asteroidea. About 1, 900 species of starfish live on the seabed in all the world’s oceans, from warm, tropical zones to frigid, polar regions. They are found from the intertidal zone down to abyssal depths, at 6, 000 m (20, 000 ft) below the surface.

Detailed explanation-2: -True starfish are classified in the Asteroidea, a group of echinoderms. Unlike the superficially similar brittle stars (Ophiuroidea), true starfish have no sharp demarcation between arms and central body, and they move using tube feet rather than wriggling movements of the whole arms.

Detailed explanation-3: -Starfish belong to the class Asteroidea, derived from the Greek words “aster” (a star) and “eidos“ (form, likeness, appearance). There are more than 1600 species of starfish alive today, and they have an important role in the community structure of the ocean floor.