Abstract: Aquatic recreational equipment for facilitating rhythmic movement on water surfaces by manual propulsion, including a pair of hydrodynamically designed flotation skis. Each ski is integrally constructed of component parts comprising a ski-shaped member, a sealed buoyant chamber and a fixed keel, with an adjustable boot secured to the ski member. The buoyant chamber is provided with lateral surfaces defining ridges or shoulders and the cross-sectional areas of the buoyant chamber are such that stability and maneuverability of the flotation ski are maximized.