A traditional fisherman in La Paz, Mexico, who works with SmartFish brings sustainable seafood to market. SmartFish was one of the competitors in last week's Fish 2.0 competition. Courtesy of Smart Fish hide caption

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Juvenile Chinook salmon swim in the American River in California. The state's salmon fishery, which revolves around fall-run Chinook, has been estimated to be worth $1.4 billion, with the fish finding their way into markets and restaurants. Courtesy of John Hannon/USBR hide caption

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Parisi Tsakirios, 29, mends a net as he prepares for another fishing trip. "I can't imagine doing any other job, because I love the sea," he says. "But there are hardly any fish. I barely break even. I can't support my family." Joanna Kakissis/NPR hide caption

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Pacific bluefin tuna for sale for $2.99 per pound at the fish market in San Diego. That shockingly low price does not reflect the deeply threatened state of the bluefin population. Clare Leschin-Hoar for NPR hide caption

toggle caption Clare Leschin-Hoar for NPR

Pacific Halibut caught in Cook's Inlet, Alaska. via Wikimedia hide caption

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Fish for sale in the fish market in Fraserburgh, Scotland. Ari Shapiro/NPR hide caption

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A tray of sardines in Costa Mesa, California, in this November 17, 2014 photo. Plummeting sardine populations force a complete ban on sardine fishing off the U.S. West Coast for more than a year. LUCY NICHOLSON/Reuters /Landov hide caption

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A Russian Emergencies Ministry ship is seen through the window of a helicopter during a rescue operation after the Russian trawler Dalniy Vostok sank off the coast of Kamchatka, in the Sea of Okhotsk, on Thursday. Reuters /Landov hide caption

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Fishermen Ed Stewart (left) and Tannis Goodsen mend groundfishing nets on Merrill Wharf, in Portland, Maine, last November. Robert F. Bukaty/AP hide caption

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A fisherman pulls a basket filled with anchovies aboard a fishing boat off of Peru's northern port of Chimbote, in 2012. Peru is the world's top fishmeal exporter, producing about a third of worldwide supply. Enrique Castro-Mendivil/Reuters/Landov hide caption

toggle caption Enrique Castro-Mendivil/Reuters/Landov

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