The video shows a swimmer in a pool with several lanes, swimming underwater. The swimmer is wearing a swimming cap and goggles, and is moving forward with a freestyle stroke. The pool is indoors, and the water is a clear blue color. The swimmer's movements are smooth and efficient, and they appear to be swimming at a fast pace. The video captures the swimmer from different angles, including a close-up of the swimmer's face and a wider shot of the pool. The swimmer's arms are moving in a circular motion, and their legs are kicking in a fluttering motion. The swimmer's head is turned to the side, and their eyes are open, looking forward. The video does not show any other swimmers in the pool, and the swimmer is the only person visible. The pool is well-lit, and the water is calm except for the ripples created by the swimmer's movements.