The video shows a swimmer diving into a pool and swimming underwater. The swimmer is wearing a swim cap and goggles. The water is clear and blue, and the swimmer is moving quickly through the water. The swimmer's arms and legs are visible as they swim, and the swimmer's movements are smooth and coordinated. The swimmer's body is streamlined, and they appear to be using the breaststroke technique. The video is shot from a side angle, and the swimmer is moving towards the camera. The video is in slow motion, allowing viewers to see the details of the swimmer's movements.