The Molokini by Clear Blue Hawaii is a transparent two-passenger kayak made out polycarbonate material (the same used in the bulletproof glass and fighter jet canopies according to the manufacturer). The kayak comes equipped with an anodized aluminum internal frame system, dual flotation bladders and a three-quart water bailer.
This will create a illusion of floating over the water and it must be brilliant to look down while rowing.
According to the manufacturer, 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, demonstrated visibility on a sunny day during non-turbulent water conditions yielded views to depths of 75 ft. Dimensions as follows: Length: 338.3cm / 11’1″ | Width: 85cm / 33.5″ | Height: 33cm / 13″ | Weight: 18.1Kg / 40 lbs.