Reference: It is already too late for the coral

As long as we have studied coral reefs we have observed mass coral die offs in bleaching events that are often followed by regeneration and recovery. These days, however, scientists see all coral bleaching as anomalous and therefore symptomatic of global warming, as if they had never seen coral bleachings before. In 2006, they issued an alarm that "it was already too late for the coral" saying that mass coral bleaching was devastating the Great Barrier Reef and human activity involving carbon emissions was to blame. The bleaching event had occurred early in 2006. By the end of the year the supposedly devastated coral had made a complete recovery all by themselves. Thereupon, climate scientists who had once doted on the GBR as proof of carbon dioxide's devastation simply went silent on the issue.

Cha-am Jamal
Thailand