The video shows a dolphin swimming in clear blue water. The dolphin is grey in color and has a smooth, streamlined body. It appears to be a large dolphin, possibly a bottlenose dolphin, based on its shape and size. The dolphin is seen swimming gracefully, with its fins and tail moving in a coordinated manner. The water is calm, and there are no other visible creatures or objects in the frame. The dolphin seems to be enjoying its time in the water, moving effortlessly and playfully.