The sea star—often called a starfish, though it's no more a fish ... as a top predator of the intertidal zone—tiger of the tide pool—though it lacks anything like a brain.

This spiny starfish is the rock pool’s top predator ... pools are constantly changing and evolving. As the tide goes out, the rock pools dry out. As the tide comes in, they fill with sea ...

This spiny starfish is the rock pool’s top predator ... pools are constantly changing and evolving. As the tide goes out, the rock pools dry out. As the tide comes in, they fill with sea ...