Ningaloo and Great Barrier Reef hit by 'profoundly distressing' simultaneous coral bleaching events / 'Catastrophic': Great Barrier Reef hit by its most widespread coral bleaching, study finds / Coral bleaching on Great Barrier Reef reaches 'catastrophic' levels / Study shows wind patterns key in causing coral bleaching on Great Barrier Reef / Global coral bleaching event biggest on record: US agency / Coral bleachings devastate Bali reefs as sea temperatures rise / 'Most of it was dead': scientists discovers one of Great Barrier Reef's worst coral bleaching events / Future risk of coral bleaching set to intensify globally, researchers say / From flood damage to coral bleaching: Global warming hits ocean economies hard / Global coral bleaching event expanding to new countries: Scientists