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Corals are part of a group of animals called Cnidaria (nid-AIR-ee-a), also called Coelenterata (sel-EN-ter-AH-ta), which includes sea anemones, corals, jellyfish, and hydras. All of these animals are soft bodied and have multiple arms or tentacles, with which they grab food from the surrounding sea water. All Cnidaria (including corals) live in water and most are marine animals. The soft, jelly-like body of an individual cnidarian animal is called a polyp

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