The video shows a close-up of a fish finder screen. The screen displays a map of the water and the bottom of the water body. The colors on the screen indicate the depth of the water and the presence of fish. The fish finder is mounted on a boat and is being used by a person who is not visible in the video. The person is likely using the fish finder to locate fish and navigate the boat. The video does not show any fish being caught or any other activities taking place on the boat.