The Great Barrier Reef's condition has deteriorated from poor to very poor owing to climate change. A new report by the Great Barrier Reef Marine Park Authority reveals that threats to the reef are multiple and are only increasing. Unesco's World Heritage Committee is considering to add the reef in its list of sites that are 'in danger'. Warm seas and coral bleaching have almost killed off corals. Immediate international and national efforts are required to improve conditions of the World Heritage site.