Starfish

A little about starfish

When starfish move, they do so using tubed feet. Starfish do not have a brain and they do not blood. Starfish also do not contain blood. They feed on sea creatures that do not move, such as mussels and oysters. Although starfish do not have feelings, they can feel pain and are able to sense exactly what is in their environment and where. 

Nervous system in a starfish 

The nervous system of a starfish is fairly simple. Although it lacks a brain as well as blood and feelings, it does have nerves. The radial nerve spreads throughout the five rays of a starfish. The radial nerves are all linked to the nerve ring, located right in the center of the starfish's body.