The same water recreation vehicle found in fine beachfront resorts worldwide, this pedal-powered water cycle gives the rider a vigorous aerobic workout as it skims the waves. Made of high-density polyethylene, the ocean-duty hull is seamless and leakproof, with precisely-balanced pontoons for a stable, smooth ride. Its shaft-driven propeller, activated by a beaded belt drive, is corrosion proof and hinged so that blades dont hang up in sand as you launch or dock. Available from Hammacher Schlemmer for $999.95.