The video shows a swimmer in a pool, wearing a swimming cap and goggles, swimming in a lane. The swimmer is moving forward in the water, using their arms and legs to propel themselves. The pool is divided into lanes by floating lane dividers, which are red and blue in color. The water is clear and blue, and the swimmer's movements create ripples and splashes on the surface. The swimmer appears to be practicing or training, as they are moving at a steady pace and maintaining a consistent form.