A hydrocycle is bicycle-like watercraft.[1] Power is collected from the rider via a crank with pedals, as on a bicycle, and delivered to the water or the air via a propeller.[2] Seating may be upright or recumbent, and multiple riders may be accommodated in tandem or side-by-side.[3] Buoyancy is provided by two or more pontoons or a single surfboard, and some have hydrofoils that can lift the these floatation devices out of the water.[4][5][6] Brand names include Seacycle, Hydrobike, Water bike, and itBike. Kits exist to convert an existing bicycle into a hydrocycle temporarily.[7]