70% of Japan's largest coral reef dead after bleaching

Left photo taken in September 2016 shows coral bleaching at Japan's largest coral reef nestled in between the islands of Ishigaki and Iriomote in the southernmost prefecture of Okinawa. Right photo taken on Jan. 18, 2017, shows algae covering dead coral around the same area about 2 meters deep near Takatomi Island. Photos were taken using fisheye lens. (Kyodo) ==Kyodo