GENERAL HISTOLOGY

Detailed explanation-1: -Using tiny, suction-cupped tube feet, they pry open clams or oysters, and their sack-like cardiac stomach emerges from their mouth and oozes inside the shell. The stomach then envelops the prey to digest it, and finally withdraws back into the body.

Detailed explanation-2: -A closed clam is almost impossible to open, but a hungry sea star can do it. It crawls onto the clam shell and attaches itself, using its hundreds of tiny, tube-shaped feet that work like suction cups. And then it pulls. A sea star can pull for hours, even for days.

Detailed explanation-3: -Sea stars, commonly called, “starfish, ” are not fish. Sea stars live only in saltwater. Sea water, instead of blood, is actually used to pump nutrients through their bodies via a ‘water vascular system. ‘ Also, sea stars move by using tiny tube feet located on the underside of their bodies.