How do corals form colonies?

If you stare at just one spot on a coral reef, your eyes could be seeing more than 1,000 animals per square foot. That’s because the thing that makes up most of these marine ecosystems are tiny living animals called coral polyps, which exist on the surface of reef formations. Hundreds or thousands of identical polyps live together to form a colony. So, how do these tiny creatures build and maintain such large colonies?

Learn more: https://www.whoi.edu/know-your-ocean/did-you-know/how-do-corals-form-colonies/

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