Sea Breacher Design.

The Seabreacher X co-created and now driven by Rob Innes is the ultimate millionaire's boy-toy: a James Bond-style craft that can dive under water, roll from side to side and jump 12ft into the air. It looks like a great white shark, complete with dorsal fin, gaping jaws and rows of dagger-sharp teeth. At 16.5ft in length, it is even the same size as one.
Unlike the real thing, it also has a 260hp engine, which powers it to 50mph above water, and 20mph below it. Rob, 37, is a watersports fanatic. And along with friend Dan Piazza, 52, he has turned his hobby into a thriving business.

The pair built their first submersible 12 years ago and today their company, Innespace, has a year-long waiting list of rich adrenaline-junkies eager to buy one of their custom-built playthings. Toys they may be, but each one costs about £60,000. 'The seabreacher is really for people with a large disposable income who want to have fun,' explains Rob. 'It's pretty popular in the Middle East, but we've also sold them to clients in Korea and the Caribbean.' The seabreacher is unlike anything I've seen on the water before.