Treading Water.

It is necessary for the water polo player to know how to tread water, that is, to remain stationary in the water with the least effort. The body is upright in the water, as in a standing position. The legs are moved up and down, the arms are spread out, bent at the elbow, and moved up and down gently. The whole movement should be as slight as possible, so that the greatest possible amount of rest may be obtained.