Thought I share this...

http://www.clearbluehawaii.com/products/boats/molokini.html

The Molokini is an all-transparent two-passenger kayak made out of the same durable polycarbonate material used in the production of bulletproof glass and fighter jet canopies. It comes equipped with an anodized aluminum internal frame system, dual flotation bladders and a three-quart water bailer. The Molokini features a removable lightweight anodized aluminum frame system, allowing the user to minimize space consumption, thus making transporting and storage of multiple units easy and convenient. The simple purity of the Molokini's elegant yet powerful transparent hull has an irresistible beauty. The Aluminum internal frame and the timeless, no-frills shapes of the Molokini accessories create a sportive and modern effect. Classical exclusivity is conveyed by the sleek curves and brilliant transparency. Sportive seats designed for comfort not only make for a pleasant trip, but also meet your demands for quality and style. This model is recommend for areas that experience calm ocean conditions. New retractable skeg system included in the standard version improves tracking, a feature especially convenient for long distance paddling. If purchased additionally, the new optional outrigger system improves stability when in choppier waters and renders flipping practically impossible., Unparalleled material durability, weather ability and impact resistance are among the Molokini's advantages. Impact resistancy tests have included intense crashing against rocky shorelines, 20 ft drops, hammer blows and an ejection from a vehicle at 70mph. Tests performed on the island of Oahu, Hawaii, have proven that the visibility on a sunny day and during non-turbulent water conditions can yield views to depths of 75 ft plus for the exploration of new worlds waiting to be discovered. Tests have included encounters with pods of dolphins, coral farms and nocturnal underwater sea life.