The video shows a yellow fish swimming in the ocean. The fish is seen swimming around the ocean floor, which is covered in rocks and coral. The water is clear, and the fish is the only visible creature in the video. The fish moves gracefully through the water, its fins and tail moving in a coordinated manner. The sunlight filters through the water, casting a beautiful glow on the fish and the ocean floor. The video captures the peaceful and serene atmosphere of the underwater world.