The video shows a scuba diver in the ocean with a school of fish swimming around him. The diver is wearing a scuba suit and has a tank on his back. The fish are swimming in a large group, and the water is clear and blue. The diver is holding a camera and appears to be filming the fish. The fish are small and silver in color, and they are swimming in different directions. The diver is moving slowly through the water, and the fish are swimming around him.