Thread: Sonar Quiz #22

In the pic it is a double and triple echo from the original return. Each will be less clear as it repeats. If the bottom depth was set at 150 you should see two more returns and get less clear. I have heard that catfish will not show up in the double echo because they have no scales and that scaled fish will show up on the second echo. As far as the bottom in the original signal, it appears to be a thin harder layer with a softer layer underneath.