The video shows a dolphin swimming in the ocean. The dolphin is seen swimming near the surface of the water, and at one point, it opens its mouth wide. The dolphin's skin is a shiny gray color, and it has a long, pointed snout. The water around the dolphin is clear, and the sunlight is shining through, creating a beautiful blue hue. The dolphin appears to be alone in the water, and there are no other animals or objects visible in the video.