Warming ocean water is to blame.
"Even in the far northern reaches of the Reef, long at a sufficient distance from human pressures like coastal development to preserve, to a large extent, coral health, a staggering 50% of the coral has died."
"Even as the Great Barrier Reef dies before our eyes, Australia continues to increase its exploitation of dirty fossil fuels. In the past year, the Australian government has approved both the massive Carmichael coalmine and the Abbot Point terminal, located near the Reef, to facilitate the global export of output from the Carmichael mine. The emissions attributable to the Carmichael mine will be some of the highest resulting from a single project anywhere in the world."My Comment: Unless people like you and I join environmental action groups, little more pressure will be put on our leaders to take action to remedy things like this. Greed will continue to have its unfettered way.