Brazilian fisherman Jose Alfredo de Souza Costa (L) and his nephews Ronison (C) and Rainilson prepare bait on a metal bar with dozens of fishhooks attached, offshore of Curuca at the mouth of the Amazon River, February 18, 2011. Jose Alfredo, 31, began fishing for a living at the age of 12 in the region where the Amazon River, with its drainage basin covering about 40 percent of South America, forces a massive plume of freshwater estimated at 20 percent of the world's freshwater entering the oceans, into the Atlantic. Picture taken February 18, 2011. REUTERS/Paulo Santos (BRAZIL - Tags: ENVIRONMENT SOCIETY EMPLOYMENT BUSINESS FOOD)