What senses do starfish have?

Answer 1

The nervous system of a starfish is not very advanced, but starfish are still able to sense things in their environment. Cells on the starfish are able to sense light, temperature and other changes in their environment.

Answer 2

Echinoderms (essentially, a microscopic fire breathing dragon) emit numerous electomagnetic waves. When measured, scientists have found repeating and organized patterns in these energy waves (C.Guenther, Scientific American, 2007). It is now thought that this is a type of sonar location or perhaps communication. So they produce these waves, and possibly receive them from one another. It will be exciting to see if we can actually learn to communicate with these tiny little life forms, and thus learn more about ourselves.

Answer 3

Sea anemones have no visible sense organs, but they can distinguish between edible and inedible items. If you were to drop a piece of paper onto its tentacles, a sea anemone would grasp but then discard it. But if you first soaked the paper in clam juice, the anemone would grasp, then swallow the paper, because it tastes like food.

A sea anemone also uses its nematocysts for defence: a mouthful of poisonous barbs is unappetizing to most animals.

Answer 4

They only have the sense of sight. They have 1 simple eye on each end of their points. This makes them only allowed to see light.