Just a simple game. Have the kids line up at one end of the pool.
One by one they have to start at one end and swim as far as they can
underwater, until they have to come up for air. Once they surface,
have them sit on the pool deck, beside the place where they came up.
Variations: Have a
teammate mark the finishing point on the side of the pool using a
kick board or pylon. Try this with streamlined push offs from the
wall.