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What if All The Coral Reefs Went Extinct? | Why are Coral Reefs Important? | Dr. Binocs Show
Coral reefs are underwater ecosystems built by colonies of coral polyps, small marine invertebrates, that secrete a hard outer skeleton made of calcium carbonate. These structures are found in warm, shallow, tropical and subtropical waters and are incredibly diverse and valuable ecosystems. They are often called the "rainforests of the sea" due ...
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