Overview

coral bleaching


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The whitening of a coral colony, indicative of environmental stress. This occurs when the coral polyp expels symbiotic algal cells (zooxanthellae), which contain photosynthetic pigments, from its body. The coral reef appears bleached because most reef‐building corals have white calcium carbonate skeletons, and these show through the tissue of the corals.

Subjects: Environmental Science.


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