What are coral reefs? fact, fact about what are coral reefs?

What are coral reefs?
Coral reefs are colonies of micro creatures named pollups, little hair-like things that live on the top layer of the coral. The coral grows because when one generation dies they leave behind a hard, stony, branching structure made of limestone which later generations call home.

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Reference: Animal Planet

	What are coral reefs? [ view random fact : What are coral reefs? Coral reefs are colonies of micro creatures named pollups, little hair-like things that live on the top layer of the coral. The coral grows because when one generation dies they leave behind a hard, stony, branching structure made of limestone which later generations call home. Stumble It! Reference: Animal Planet [ animal facts ] [ coral reef facts ] [ view random fact :

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