Associated Press
In this photo taken by the U.S. Geological Survey and provided by the California Department of Fish and Game, a sea otter holds her pup at Seacliff State Beach near Aptos, Calif., on, Sept. 10, 2012. The sea otter, known as Olive, has amazed researchers by becoming the first sea otter not only to survive a dunking in oil but then also go on to deliver a healthy pup. (AP Photo/U.S. Geological Survey, Joe Tomoleoni)

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