This picture taken on July 9, 2026 shows a clownfish at Okinawa Institute of Science and Technology in Onna village, Okinawa Prefecture. From "heatwave simulators" to ecological bootcamps, scientists and conservationists are trying ways to revive and reinforce Okinawa's famous coral reefs two summers after climate-driven bleaching decimated the teeming undersea ecosystems. (Photo by Philip FONG / AFP via Getty Images) / TO GO WITH AFP STORY: Japan-climate-coral-tourism-oceans, FEATURE by Tomohiro OSAKI