◆Coral reefs are large underwater structures composed of the skeletons of colonial marine invertebrates called coral
◆corals have a symbiotic relationship with an algae called the zooxanthellae
◆Known as the rainforests of the sea" for their biodiversity,
◆FAVOURABLE CONDITIONS FOR FORMATION OF CORAL REEF:
1.Warm tropical oceans with minimum temperature of 20 degree (30 degree north and 25 degree south latitudes)
2.Oceanic water free of sedimentation;
3.Transparent parts of ocean bodies;
4.Relatively low salinity ocean bodies
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