Scientists were 'horrified' after they observed that at least 97 per cent of corals on a reef in the Great Barrier Reef have died during the past months in what is being dubbed as the world's worst coral bleaching event.

Scientists 'horrified' as mass bleaching eliminates 97% of corals at a Great Barrier Reef island

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mass coral-bleaching

Scientists 'horrified' as mass bleaching eliminates 97% of corals at a Great Barrier Reef island