The video shows a dolphin swimming in a tank. The dolphin is seen swimming towards the glass of the tank, and then it turns around and swims away. The dolphin's movements are smooth and graceful, and it appears to be enjoying its time in the water. The tank is large and spacious, with clear water that allows for a good view of the dolphin. The dolphin's skin is a shiny gray color, and it has a long, curved dorsal fin. The video is shot from outside the tank, giving a clear view of the dolphin's actions.