A group of children in a swimming pool are practicing their swimming skills. There are four children in the water, and they are all wearing swim caps. One child is in the foreground, and they are doing a butterfly stroke. There are three other children in the background, and they are all doing different strokes. The pool is indoors, and there are windows on the wall. There are also safety equipment such as lifebuoys on the wall. The water is blue and clear, and the pool has lanes marked by a red rope.