The video shows a large fish swimming in a body of water. The fish is dark in color and has a long body with fins. It is swimming near the bottom of the water, which is covered with rocks and pebbles. The water is clear, and the fish is the only visible creature in the video. The fish moves slowly and gracefully, its fins undulating as it navigates through the water. The video captures the serene beauty of the underwater world and the majestic presence of the fish.