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Echinoderms are marine animals that live in the ocean. They have arms
or spines that radiate from the center of their body. The central body
contains their organs, and their mouth for feeding.
Sea stars, commonly known as the starfish, have 5 or more arms attached
to their body.
Sea urchins have many spines connected to their body. These spines help
to protect them from predators. |
