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NATURE | A Mystery in Alaska | A Tragedy Unfolding | PBS

The Steller's sea lion population of western Alaska has declined by about 80 percent over the past 20 years. Are the animals starving to death, or eating too much of the wrong food? Are they falling victim to killer whales in unusual numbers? Is pollution to blame? Or is there some other influence, perhaps resulting from a changing climate or altered ocean currents, that is causing their demise? Naturalist filmmaker Shane Moore, who has been working in the Alaskan wilderness for much of the past 10 years, brings a sense of urgency and new understanding to this puzzle in A MYSTERY IN ALASKA, airing on Thirteen/WNET New York's NATURE series, Sunday, July 1 at 8 p.m. (ET) on PBS (check local listings). For more information, go to: http://www.pbs.org/wnet/nature/alaska/index.html
Length: 03:47

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