Summary
A starfish has no legs, yet it can 'gallop' across the seafloor. Deep Look films the hundreds of tiny tube feet on its underside that pull, grip, and even flip it over.
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All ages
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Teaching resources
Discussion questions
Talk about it
A starfish moves with hundreds of tiny water-powered tube feet. No single one does much, but working together they let it crawl, grip prey, and right itself.
- What structures does a starfish use to move, since it has no legs?
- How do hundreds of small tube feet add up to real movement?
- Why might it help a starfish to grip the ground while it moves?
Quick work-a-long
Vocabulary: tube feet, structure, grip, movement.
Try it: Try moving a small object using only your fingertips wiggling together. Write how many small parts can do one big job.