When Peter Platt was in Newport, Oregon in 2018, visiting Local Ocean Seafoods to bring them on as a supplier, he spoke with some of the fishermen docked outside the waterfront fish market and restaurant. “All the salmon fishermen were like, ‘We don’t even bother to fish off the coast here anymore. Everyone heads to Alaska,’” says Platt, founder and owner of Portland’s high-end Peruvian restaurant Andina. “‘There’s just no fish.’” The dearth of Pacific salmon, he learned, was partly due to warming waters in salmon streams and drought-fueled water shortages, which are lethal to salmon eggs and juvenile fish. Platt, who is in charge of sustainability initiatives at Andina, did the only thing he could: He and his staff took salmon off Andina’s menu.

“We’re just not going to offer it,” he says. “It’s either unavailable or too expensive for the quality. . . . climate has a lot to do with it.”