The video shows a swimming competition taking place in a large pool. The pool is divided into several lanes by floating lane dividers, and there are swimmers in each lane. The swimmers are wearing swim caps and goggles and are performing the butterfly stroke, which is a difficult and demanding swimming technique. The swimmers are moving quickly and efficiently through the water, their arms and legs working in unison to propel them forward. The spectators can be seen in the background, watching the competition with interest. The pool water is a clear blue color, and the lane dividers are yellow and green. The swimmers' movements create ripples and splashes in the water, adding to the dynamic nature of the scene.