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

itoggle caption Enrique Castro-Mendivil/Reuters/Landov

With local cod so scarce, Chef Toby Hill of Lyric Restaurant in Yarmouth Port, Mass., tries out a dogfish salad — served here with garlic aioli on toast — instead. Dogfish is still plentiful in New England waters, but wholesale fisheries say there's not much demand for it in the U.S. Christine Hochkeppel/Courtesy of Cape Cod Times hide caption

itoggle caption Christine Hochkeppel/Courtesy of Cape Cod Times

Saltwater wetlands that include marshes and shoals on Virginia's Atlantic coast. U.S. coastal wetlands losses were 25 percent greater from 2004-2009, according to a recent federal study. U.S. Fish and Wildlife Service hide caption

itoggle caption U.S. Fish and Wildlife Service

Colorful covers of menus from the Royal Hawaiian Hotel (left) and the Monarch Room Royal Hawaiian Hotel. New York Public Library hide caption

itoggle caption New York Public Library