Takeo Nakajo, 70, captain of the Nakajomaru fishing boat, uses a radio while searching for a katsuo (skipjack tuna) fish school in Tosa Bay, Kochi Prefecture, Japan, May 15, 2022. Locals and experts say fatty katsuo indicates climate change and a risk for the fish numbers already under threat due to growing demand and overfishing. It "must have something to do with the water temperature," Nakajo said. "I have a sense of urgency thinking what if katsuo doesn't come to the bay some day." REUTERS/Kim Kyung-Hoon
