The video shows a close-up of a fish swimming in the water. The fish appears to be a large, dark-colored fish with a shiny, wet body. It is swimming in a calm and steady manner, with its fins and tail moving smoothly. The water is clear and has a light blue color, indicating that the video was likely taken in a natural body of water. There are no other fish or objects visible in the video, and the focus remains solely on the single fish.