The video shows a person swimming underwater in a pool. The swimmer is wearing a black swimsuit and goggles. The water is a clear green color, and the swimmer's movements are smooth and controlled. The swimmer's arms are extended forward, and their legs are kicking in a steady rhythm. The swimmer's head is tilted back, and their eyes are open, looking towards the camera. The swimmer's hair is tied back, and they are wearing a swim cap. The lighting in the pool is bright, and the water is clear, allowing for a good view of the swimmer's movements.