Engineers building robotic fin for submarines

Inspired by the efficient swimming motion of the bluegill sunfish, MIT researchers are building a mechanical fin that could one day propel robotic submarines.

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<p><a href="http://www.physorg.com/news105024808.html">Engineers building robotic fin for submarines</a></p> <p>Inspired by the efficient swimming motion of the bluegill sunfish, MIT researchers are building a mechanical fin that could one day propel robotic submarines.</p>