Coral reef facts
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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.
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
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When is coral not a coral reef?
There are two types of coral, hard coral and soft coral. Hard coral species appear in reefs while soft coral species do not build reefs.
There are two types of coral, hard coral and soft coral. Hard coral species appear in reefs while soft coral species do not build reefs.
Reference: http://www.enchantedlearning.com/subjects/ocean/Coralreef.shtml
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