The urchin's tube feet help it get to the kelp so it may eat it, which assists it in its role in the food chain.
To travel across rocks, sand, or other surfaces, an urchin uses its many tube feet. Moreover, if food falls on an urchin's back, all those tube feet act as a bucket brigade, transferring the food to the urchin's mouth.
Using a device known as Aristotle's lantern, sea urchins consume food. Five hard plates form a beak-like assembly that makes up the object. To rid rocks of algae, they scrape them with their mouths that resemble beaks.
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