Chris Council Photography
Caption: Barry Dobson examines a dead porpoise on Monday, Feb. 21, 2011 on Casse-tete Island, a barrier island in Timbalier Bay, La. Clumps of oil can be seen in the foreground and background. Scientists were unable to offer a definitive explanation why large amounts of dead dolphins and porpoises began washing ashore along the Gulf coast beginning in February 2011.
Keywords: BP, Casse-tete Island, Deepwater Horizon, Gulf of Mexico, Louisiana, bayou, conservation, environment, oil spill, pollution, porpoise