The video shows a large fish swimming in the ocean. The fish has a long body and a pointed tail, and it is surrounded by smaller fish that are swimming around it. The water is dark, but the fish are illuminated by light, making them stand out against the dark background. The large fish appears to be moving slowly and gracefully, while the smaller fish are darting around it. The video captures the beauty and diversity of marine life, showcasing the different sizes and shapes of the fish and the way they interact with each other in their natural habitat.