The video shows a large group of fish swimming in the ocean. The fish are moving together in a coordinated manner, creating a mesmerizing pattern. The water is clear and blue, and the sunlight is shining through, illuminating the fish and making them glisten. The fish appear to be of the same species, with a silver color and streamlined bodies. They are swimming in a circular formation, with some fish breaking away from the group and swimming in a different direction. The video captures the beauty and complexity of marine life and the intricate relationships between different species.