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...
a reef composed mainly of coral and other organic matter of which parts have solidified into limestone.
Coral reefs are diverse underwater ecosystems held together by calcium
carbonate structures secreted by corals. Coral reefs are built by colonies of tiny
They are usually either connected to the mainland or very close to the shore, separated by a semi-enclosed lagoon where deeper water lies.
Pesticides also make their way into the sea through crop field runoff, which increases the amount of nitrogen in the sea, causing ... More »
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 ...
Dec 16, 2014 ... What are Coral Reefs. Appearing as solitary forms in the fossil record more than
400 million years ago, corals are extremely ancient animals ...
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 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 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 ...