The video shows two swimmers, one wearing a blue and red swimsuit and the other wearing a black swimsuit, swimming underwater. The swimmer in the blue and red swimsuit is wearing a pink swim cap, while the swimmer in the black swimsuit is wearing a blue swim cap. They are both swimming in a freestyle stroke, with their arms extended forward and their legs kicking back and forth. The water is clear and blue, and the sunlight is shining through the surface, creating a beautiful and serene underwater scene.