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Photo Gallery: Overfishing

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Fishermen haul in a bluefin tuna caught in the old Mattanza method. The giant bluefin used to surge through the Straits of Gibraltar each spring, fanning out across the Mediterranean to spawn. Over millennia, fishermen devised a method of extending nets from shore to intercept the fish and funnel them into chambers, where they were slaughtered. Today, all but a dozen or so of the trap fisheries have closed, primarily due to lack of fish, but also because of coastal development and pollution. Photograph by Brian Skerry