Lone fish on underwater bleached coral reef - 4K stock video

The devastating effects of coral bleaching as a result of Climate Change, pollution, ocean acidification and over-fishing. These corals are mostly extinct due to the ocean temperature rising and causing loss of endosymbiotic algae. This once was a garden of healthy coral now this coral reef ecosystem is decimated leaving nothing but rubble. One Honeycomb Grouper (Epinephelus merra) tries to find shelter where there is none. Footage taken whilst scuba diving at Phi Phi islands, Krabi province, Thailand.