threats to coral reefs

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…destructive trawls and tangle-net dredges. Commercial extraction of corals has damaged essential reef habitats and is believed to be causing local depletions of rare species in some areas (The James W. Hyde BIOL 1040 International Trade in Corals, 1998) Land-based sources of marine pollution pose the greatest threats to coral reefs because of their widespread impact on water quality. Accounting for 80% of all marine pollution, land based sources of marine pollution include coastal development, agricultural ------------------------------------------------------------------------ **Bibliography**