Coral reefs are diverse underwater ecosystems held together by calcium
carbonate structures secreted by corals. Coral reefs are built by colonies of tiny
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 ...
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 ...
Coral reefs are home to 25% of all marine life on the planet. In fact the variety of
life supported by coral reefs rivals that of the tropical forests of the Amazon or ...
Coral reefs are the foundation of many marine ecosystems—and they are in
Coral reefs teem with life, covering less than one percent of the ocean floor, but
supporting about 25 percent of all marine creatures. However, threats to their ...
Oct 8, 2013 ... Coral reefs are large underwater structures composed of the skeletons of coral,
which are marine invertebrate animals.
Dec 16, 2014 ... Coral reefs are unique (e.g., the largest structures on earth of biological ... Corals
are anthozoans, the largest class of organisms within the ...
The Coral Reef Conservation Program is a partnership between the NOAA Line
Offices that work on coral reef issues. We bring together expertise from across ...
LOCATION: Coral reefs are generally found in clear, tropical oceans. Coral reefs
form in waters from the surface to about 150 feet (45 meters) deep because ...