GENERAL HISTOLOGY

Detailed explanation-1: -It is these suction-bottomed tubes that the sea star uses to move about. It draws in water and channels it to canals that run throughout its body, usually ending in the tube feet. By changing the pressure of water in its body, the sea star can move the tubed feet, and thus move forward.

Detailed explanation-2: -Also, sea stars move by using tiny tube feet located on the underside of their bodies. Adult sunflower sea stars can move at the astonishing speed of one meter per minute using 15, 000 tube feet. Tube feet also help sea stars hold their prey.

Detailed explanation-3: -Most sea stars have five arms, though some have more-up to 25 in some species. On the undersides of the arms are hundreds, sometimes thousands, of tiny tube feet called podia. The long slender tube feet are hollow and full of water, like miniature water balloons.

Detailed explanation-4: -Complete answer:-Tube feet are a characteristic of the Phylum Echinoderm. They are a characteristic organ of the starfishes.-They are a part of the water vascular system, which is a hydraulic system in echinoderms necessary for locomotion, food ingestion, adhesion, and gas exchange.