More details have emerged about Jose Salvador Alvarenga's alleged 13 months adrift in the Pacific. After leaving for a shark-catching trip on Dec. 21, 2012, Alvarenga, a fisherman, said the motor of his boat died, and he spent some days drifting until he realized he was lost in the Pacific Ocean. He said he survived by catching turtles, birds, and fish, but as harrowing as Alvarenga's tale of survival is, some experts are skeptical. "It's hard for me to imagine someone surviving 13 months at sea," said Tom Armbruster, U.S. ambassador to the Marshall Islands. "But it's also hard to imagine how someone might arrive on Ebon out of the blue."