I think it is the sea urchin although i might be wrong.
- you are correct, a sea urchin is in the Echinodermata phylum as the sea star.
sea urchin
The sea urchin is a member of the phylum Echinodermataand is covered with spines that may or may not be poisonous.
Yes, sea stars are able to move the spines in order to protect themselves as armor.
A sea urchin's body is covered in sharp spines.
It's a sea urchin.
A sea star protects itself by using the sharp spines on its back to attack its predator. :-B
A star fish protects its self by these things they have called shape spines
Sea urchins are covered almost entirely with spines, except for the bottom of their body.
The phylum cnidaria have radial symmetry, meaning their body parts are arranged regularly around a central axis. Most are covered with nematocysts structures which serve as defense against predators and appear to be spines from the outside.
they belong to phylum echinodermata...which are spiny-skinned animals. They have hard shells covered with prickly spines or needles.
A sea urchin is covered with very long, quite sharp spines. I know a scuba diver who banged one with his knee and had to go in for surgery.
So that the sea urchin can protect itself from is enemies, it also has venomous spines. They also use their spines to kill other sea ceatures, so they can eat them.