how are corals formed
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Coral reefs begin to form when free-swimming coral larvae attach to submerged rocks or other hard surfaces along the edges of islands or continents. As the corals grow and expand, reefs take on one of three major characteristic structures —fringing, barrier or atoll.
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Coral is a substance formed by the skeletons of the sea animals. It may look like a multi color rock, but it is not. Coral is a living animal and belongs to the large group of animals that comprises of, jelly fish, sea anemones and hydroids.
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