Wastenot Wales - click here http://wastenot.wales/story.php?title=click-here-78 A lot of mobile or hand-held fish finders deal with the exact same principle as their larger relatives, the sturdily set up fish finders located on fishing watercraft. Sonar is used to find and identify video game fish in water using echolocation. Acoustic waves are sent out via the water column. Anything in the course of the wave mirrors back as an item on the finder's sight display. Mon, 16 Apr 2018 08:13:44 UTC en