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Caption: This is a young Southern elephant seal, Avian Island, Antarctic Peninsula. Southern elephant seals are the champion divers among aquatic mammals with a maximal recorded dive time of 2 hours. This image relates to a paper that appeared in the June 14, 2013, issue of Science, published by AAAS. The paper, by Scott Mirceta at University of Liverpool in Liverpool, UK, and colleagues was titled, "Evolution of Mammalian Diving Capacity Traced by Myoglobin Net Surface Charge."
Credit: [Image courtesy of J. Burns]
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