By DAILY MAIL REPORTER
Breaking the waves: The shark-like Seabreacher X can reach surface speeds of 50mph and has the turning style of a dolphin
A mighty beast rises out of the water, ready to pounce on some unsuspecting prey.
The waters of Whiskeytown Lake, in northern California, apparently have a new
master - but on closer inspection this is no killer whale, it's a hi-tech submarine.