Corals National Geographic

Meet the tiny organisms that combine to create the world's great tropical reefs. Find out about the threats that imperil corals worldwide.
What are coral reefs? Coral can be found in tropical ocean waters around the world. But how much do you know about reefs and the tiny animals—polyps—that build them? Learn all about coral and why warming waters threaten the future of the reef ecosystem.
Images of devastated coral reefs, a common reminder of climate change, can give the impression of a static landscape. But time-lapse footage of coral bleaching as it happens shows a surprisingly active process.

Planting coral could save - Museu das conchas

This is a patch of yellow pencil coral (Madracis mirabilis). Look how

Saving coral: rebuilding hope reef

Coral Reef, Red Sea

Endangered Coral Reefs and Their Natural Recovery and Rebirth

Great Barrier Reef Exploring Oceans

Staghorn coral, facts and photos

Coral reefs by Gracie Little on Prezi

National Geographic Pristine Seas - Good news on the reef

Photo and caption by Bill Lamp'l Fiji is known as the soft coral capital of the world. This shot …

Coral

Yes. Coral Reefs are dying.. An aim to raise awareness for our

Coral

Coral Reefs 101 National Geographic