Off the far northeastern coast of Australia lies the world's largest living specimen, the Great Barrier Reef. It is the only living thing on earth viewable from space and famed for being home to one of the largest diversities of marine species on the planet. But years of ocean warming, pollution, and shipping have begun to take its toll on the health of the reef, and a new culprit, port development, is adding to this multitude of woes. A passionate team of marine conservationists gives 360-degree access to their efforts to save the beauty and life of the reef.