The video shows a lionfish and a large fish swimming in the ocean. The lionfish has long, flowing fins and a striped body, while the large fish has a smooth, streamlined body. The water is clear and blue, and the sunlight filters through, creating a beautiful underwater scene. The lionfish appears to be swimming in a slow, graceful manner, while the large fish moves more quickly and with more purpose. The two fish seem to be interacting with each other, perhaps playing or communicating in some way. The video captures the beauty and diversity of marine life, showcasing the unique characteristics of these two species.