Sea Urchin
Sea Urchins are spiky, spherical animals that live in the ocean. Their main predator are eels, sea otters, triggerfish, and sea starts. Their prickly skin is made to defend themselves from predators, and the spikes can be from 1to 3 centimeters long. The nervous system of this animal contains a nerve ring near the mouth, not a brain, with nerve cords that branch out into the appendages of the animal.
Sea Urchins are spiky, spherical animals that live in the ocean. Their main predator are eels, sea otters, triggerfish, and sea starts. Their prickly skin is made to defend themselves from predators, and the spikes can be from 1to 3 centimeters long. The nervous system of this animal contains a nerve ring near the mouth, not a brain, with nerve cords that branch out into the appendages of the animal.