Starfish move about and grip objects with thousands of little tube feet underneath each arm. An internal hydraulic system pumps sea water into or out of each foot. A few tube feet are seen here protruding from the fringe of spines that runs along each arm. Each foot ends in a white sucker that can grip a surface.
Using this item
Te Ara - The Encyclopedia of New Zealand
Photograph by Melanie Lovell-Smith
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