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(Airs Sunday, August 24) Steller's sea lions are rapidly disappearing from Alaska's waters, and no one knows why. New research illustrated in this film shows that a broad combination of factors could be responsible.
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Frustrated fishermen captured video of killer whales thrashing at sea lions in a harbor. Are fisheries being blamed for losses caused by killer whales?
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Download desktop wallpaper from NATURE's "A Mystery in Alaska."
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NATURE spoke with Trites about the complexities of Alaska's offshore ecosystems. A number of complex factors are likely to blame for the decline in Alaska's Steller's sea lions, he says.
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Thomas says his team's work, which included surveying fish populations using sonar, has helped highlight the important role that herring play as a food source for sea lions.
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In "A Mystery in Alaska" Moore leads viewers through the thicket of often conflicting explanations for why Alaska's Steller's sea lion population has fallen on hard times.
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