The video shows a swimmer in a pool, swimming underwater. The swimmer is wearing a yellow swimsuit and goggles. The swimmer is moving forward, and the camera follows the swimmer's movements. The water is clear and blue, and the pool has lane dividers. The swimmer's arms are moving in a freestyle stroke, and the swimmer's legs are kicking. The swimmer's head is above the water, and the swimmer is breathing. The swimmer's body is fully submerged in the water. The swimmer is moving smoothly and efficiently through the water.