Kongsberg Maritime M3-HF Multibeam Imaging Sonar Observations of Migrating Salmon

We had a chance to test out the new Kongsberg Maritime M3-HF Multibeam Imaging Sonar in a local river. So far the results look impressive. So many frequencies to choose from! Should be a good all-in-one tool for hi-res bathymetry mapping, bottom substrate mosaics and fish detection.