The video shows a large group of fish swimming in the ocean. The fish are of different sizes and colors, and they are swimming in various directions. The water is clear and blue, and the sunlight is shining through, creating a beautiful underwater scene. The fish are moving in a coordinated manner, creating a mesmerizing effect. The video is shot from the perspective of someone inside a tunnel, which is visible in the foreground. The tunnel appears to be made of glass or plastic, and it provides a clear view of the fish and the ocean. The video is shot in high definition, and the colors are vibrant and realistic. The fish are the main focus of the video, and their movements are the highlight of the scene.