In just nine months, bleaching caused by warmer water has killed around 67 percent of the coral in a previously pristine part of the reef, one of the natural wonders of the world.

…Threats to the reef have become so severe that in recent years UNESCO has suggested it could be placed on list of World Heritage sites “in danger.”

Australia’s Great Barrier Reef suffers worst ever coral bleaching | FOX 61

Sigh…