tube feet

tube feet

Tube feet of the starfish Asterias vulgaris.

tube foot and sucker

Sucker at the tip of a tube foot.

Tube feet are extensions of the water-vascular system of echinoderms, including starfish and sea urchins. They protrude from the body and often end in suckers. Tube feet be used for locomotion and/or for maintaining a tight grip on prey or on the bottom.