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What are the functions of tube feet?

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Tube feet in echinoderms have a few functions. The obvious one is locomotion. The feet are powered by the water vascular system. read more

Tube feet function in locomotion, feeding, and respiration. The tube feet in a starfish are arranged in grooves along the arms. They operate through hydraulic pressure. They are used to pass food to the oral mouth at the center, and can attach to surfaces. read more

By controlling tube feet in a wavelike motion, releasing and contracting the tube feet in a series, a starfish can grip and walk along surfaces. Some species of starfish, like the northern sea star, can travel a mile in one week. read more

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