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Coral Reef Atoll Formation
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Coral reef atoll formation. A coral reef is an underwater ecosystem characterized by reef building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. An atoll ae t l ae t l ae t o l e t l e t l or e t o l sometimes called a coral atoll is a. A stable year round climate is common in the tropical marine environment.
This means there are few environmental changes throughout the year and no real seasonal. Coral reef ridge or hummock formed in shallow ocean areas by algae and the calcareous skeletons of certain coelenterates of which coral polyps are the.