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Photo by Dave Orrick / Pioneer Press University of Minnesota Professor Peter Sorensen discusses the newly operational underwater sound system designed to deter invasive carp on Monday at Lock and Dam No. 8 on the Mississippi River south of La Crosse, Wis., in Genoa, Wis. The first-of-its-kind system cost $75,000 and plays the racket of about 20 outboard motors through five underwater speakers.

Carp get an earful from underwater speakers

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GENOA, Wis. — Any invasive carp trying to swim up the Mississippi River through the shipping lock here will get an earful.

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