Alewifes avoid predator
Alewifes avoid predator
Sonar records school of alewifes avoiding attack in Kennebec River, USA.
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Courtesy of John Truebe, Lakeside Engineering, Inc
THIS IMAGE (ABOVE) WAS CAPTURED WITH A SOUND METRICS IMAGING SONAR
To capture the data above, the imaging sonar unit was mounted to a handtruck (below).
