How are coral reefs formed?

They're fragile and beautiful and protect coastlines from erosion and storms. But how are coral reefs made? Learn how these sensitive marine ecosystems form.

Process of coral reef formation. Blue surface is the surface of the sea.

What is coral? - Great Barrier Reef Foundation

Reef - Wikipedia

Coral Is A Tiny Marine Animal That Often Lives in Colonies. Huge Colonies of Hard Corals Form Coral Reefs

Great Barrier Reef

How are coral reefs formed?

What is the Importance of Coral Reefs? Because Coral Reefs are the “rainforests of the ocean” and represent twenty-five percent of the oceans marine life, - ppt download

Coral Reefs Learn Science at Scitable

What is coral, and why are coral reefs important?

A graveyard of beauty? - One India One People Foundation

Coral reef, Description, Geochemistry, Origins, & Threats

How are the coral reefs formed?

How to build a 'Great' barrier reef - Curious

Reef

What are corals?