Carp get an earful from underwater speakers

August 7, 2014 at 12:14 am in Uncategorized

GENOA, Wis. — Any invasive carp trying to swim up the Mississippi River through the shipping lock here will get an earful.
Five underwater speakers blare out the racket of roughly 20 outboard motors — a sound unpleasant to humans, unnoticed by n…continue reading on