Study: Sleeper Sharks May Kill Steller Sea Lions

October 15, 2014 9:45 PM

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Scientists researching the severe decline in Alaska's Steller sea lion population have a fingered a new possible suspect for the drop: Pacific sleeper sharks, a species previously thought of as a scavenger and fish-eater.

A study led by Oregon State University researcher Markus Horning concludes that three juvenile sea lions tracked with implanted data transmitters were killed by a cold-blooded predator, and the likely culprits were sleeper sharks, which can grow to 20 feet long.

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