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Otters, beavers and other semiaquatic mammals keep clean underwater, thanks to their flexible fur

  • Written by Andrew Dickerson, Assistant Professor of Mechanical, Aerospace and Biomedical Engineering, University of Tennessee
Otters, beavers and other semiaquatic mammals keep clean underwater, thanks to their flexible furOtters and other semiaquatic mammals can keep clean even in dirty water. AP Photo/Kirsty Wigglesworth

Underwater surfaces can get grimy as they accumulate dirt, algae and bacteria, a process scientists call “fouling.” But furry mammals like beavers and otters that spend most of their lives wet manage to avoid getting their fur slimy....

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