Coral reefs are endangered due to rising global temperatures, pollution and overfishing. It is estimated that about 1/5 of all coral reefs on the planet have been destroyed. The re...
Coral reefs are underwater structures formed from the calcium carbonate secreted by corals.
Coral reefs are diverse underwater ecosystems held together by calcium
carbonate structures secreted by corals. Coral reefs are built by colonies of tiny
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 ...
bleaching happens when coral
polyps, the animals that build corals
, shed the algae (zooxanthellae) that give them their color, and which are necessary for their survival. Corals
in the Caribbean and Florida have bleached when sea surface temperatures rose and wer... More »
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 ...
Oct 8, 2013 ... Coral reefs are large underwater structures composed of the skeletons of coral,
which are marine invertebrate animals.
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 ...
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 ...
Coral organisms, called polyps, can live on their own, but are primarily
associated with the spectacularly diverse limestone communities, or reefs, they