FILE - In this Feb. 22, 2011 file photo, Institute for Marine Mammal Studies veterinary technician Wendy Hatchett lifts a dead bottlenose dolphin that was found on Ono Island, Ala., and brought for examination to Gulfport, Miss. Ten years after the nation's biggest offshore oil spill fouled its waters, the Gulf of Mexico sparkles in the sunlight and its fish are safe to eat. But scientists who have spent $500 million dollars from BP researching the impact of the Deepwater Horizon disaster have found much to be concerned about. (AP Photo/Patrick Semansky, File)
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