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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. |
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Want to learn more about echinoderms? See our echinoderm video collection. Web Sites about Echinoderms: |
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