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What is an coral?

Updated: 8/17/2019
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14y ago

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Coral are made up of a thin layer of living animals called polyps, which secrete

a chalky, limestone skeleton as they grow. Coral colonies grow as the polyps

divide and multiply in a process known as budding.

In addition to catching plank-tonic prey with their tentacles corals also derive

nourishment from simple single celled algae called zooxanthellae (pronounced

zoo-zan-thelly). living within their tissues. Like all plants, zooxanthellae

photosynthesize, producing nutrients from the suns energy which are used by the

polyp for its own nutrition. Corals with zooxanthellae are able to lay down

limestone skeletons up to three times faster than those corals without.

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14y ago
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