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Coral reef - Wikipedia


Coral reefs are diverse underwater ecosystems held together by calcium carbonate structures secreted by corals. Coral reefs are built by colonies of tiny animals ...

Coral Reef | Basic Facts About Coral Reefs | Defenders of Wildlife


Coral reefs are some of the most diverse ecosystems in the world, housing tens of thousands of marine species. About one-third of all marine fish species live ...

NOAA CoRIS - What are Coral Reefs


Dec 16, 2014 ... Coral reefs are unique (e.g., the largest structures on earth of biological origin) and ... Stony corals (scleractinians) make up the largest order of ...

Corals, Coral Pictures, Coral Facts - National Geographic


Coral organisms, called polyps, can live on their own, but are primarily associated with the spectacularly diverse limestone communities, or reefs, they construct.

Coral Reefs | Coral Reef Alliance


From reef-building corals to large, predatory fish like sharks, coral reefs are one of the most fascinating, complex, and biologically diverse ecosystems.

Coral Reefs


Coral reefs are the most diverse and beautiful of all marine habitats. Large wave resistant structures have accumulated from the slow growth of corals.

Coral Reef Facts and Information


Facts and information about coral reefs; including reef structure, marine life, and distribution.

www.ask.com/youtube?q=What Is A Coral Reef&v=J2BKd5e15Jc
Jan 26, 2015 ... Come learn about the amazing creatures that inhabit the coral reefs and how to protect them! We'll see sharks and sea turtles, parrotfish, eels, ...

Coral reefs | WWF


Conservation of ocean environments, seas, coasts, the coral reefs and their magnicient diversity of marine animals and plants.

Coral Reefs - MarineBio.org


Coral reefs are a precious resource in the ocean because of their beauty and biodiversity. Coral reefs provide shelter for a wide variety of marine life, they ...

Coral reefs are underwater structures formed from the calcium carbonate secreted by corals.
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Corals and Coral Reefs | Smithsonian Ocean Portal


Coral reefs are the most diverse of all marine ecosystems. They teem with life, with perhaps one quarter of all ocean species depending on reefs for food and ...

What Are Coral Reefs? | Coral Facts - Live Science


Oct 8, 2013 ... Coral reefs are large underwater structures composed of the skeletons of coral, which are marine invertebrate animals.

Coral Reefs - National Geographic


Coral reefs are the foundation of many marine ecosystems—and they are in danger.