Meet the Hydrascope: a telescopic camera crane that allows film makers to capture complex shots easily. This camera crane supports a huge range of camera moves and positioning. It is waterproof and can be submerged underwater for filming. The Hydrascope supports a max payload of 230 pounds. It is compatible with 3D cameras and underwater gear.
The above video gives you a better idea what you can do with the Hydrascope. More information is available here.