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Post by DrBlueThumb on Apr 12, 2016 20:52:52 GMT
Zooxanthellae are minute, single-celled algae which live inside most species of coral and help to give it colour. They photosynthesise in the same way that all plants do, and in return for their protection within the tissues of the coral they process carbon dioxide and nitrous waste produced by the coral, and feed it with sugars produced in photosynthesis. answers.seneye.com/en/Aquarium_help/What_is_Coral/What_are_zooxanthellae
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