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Whales and walrus: tillers of the seafloor

http://marine.usgs.gov/fact-sheets/whales/

Report on sea floor marks in the Northeast Bering Sea and Chukchi Sea that were identified as pits and furrows caused by whales and walruses in the process of feeding on bottom crustaceans.

Related topics:
Animal behavior, Crustaceans, Mammals, Sea-floor characteristics, Sedimentation, Sidescan sonar

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