A fish finder is a device used by people who fish to locate fish underwater. It uses sound waves, which are sent out and bounce off objects beneath the water’s surface. The device then measures how long it takes for the sound waves to return, helping it find the depth and location of fish or underwater features like rocks or the bottom of the water. Fish finders are helpful for improving the chances of catching fish by showing where they are swimming, making it easier to target the right spots.

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