The video shows a swimmer moving through the water in a swimming pool. The swimmer is wearing a swim cap and goggles and is swimming in a lane marked by lane dividers. The water is a clear blue color, and the pool is surrounded by tiled walls. The swimmer is performing a freestyle stroke, moving their arms in a windmill motion and kicking their legs in a fluttering motion. The swimmer's movements are smooth and continuous, indicating a high level of skill and training.