Most of the coral reefs in the western Indian Ocean face high risk of extinction in the next 50 years due to global warming and overfishing, as per a new study. Coral reef is an underwater ecosystem, which is composed of skeletons of colonial marine invertebrates called coral. Most coral reefs grow in warm, shallow, clear, sunny and agitated water. They are found all over the world’s oceans. The collapse of a coral reef means the collapse of the coral reef system as when a reef collapses, it loses its ability to operate as a reef system.
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