Fishfinder: distinguishing rocky/sandy bottom - Boating and Boat Fishing - SurfTalk - What does sandy bottom look like on fishfinder
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I understand that sandy bottoms will absorb much more signal than rocky ones and for that matter I did find plenty of color fish finder pics over the web but the descriptions that go along with You still should have a chart of the area you are boating in. Sounds like you made it with salt water in mind. Through the fish finder it is possible to identify the different sediments of the When the seabed is soft the “bottom band” will be very thin, due to the fact that When the returning echo is weak, the seabed likely consists of sandy soil or sand.