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  • Pollution, in the form of runoff of farm chemicals. The Great Barrier Reef lies off the coast of a rich farming region.
  • Human interference. Scuba diving and snorkelling is usually harmless, but people are tempted to break off the coral as a souvenir.
  • Littering from plastic bait bags from fishermen, fishing line, general rubbish dropped overboard, particularly on tour boats. Tourism causes major ecologuical damage.
  • Occasionally a large ship may run aground, damaging the coral and even leeching oil.
  • General global warming caused by industry, pollution, etc is contributing to large amounts of coral bleaching.
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12y ago

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