Jacques Cousteau’s grandson Fabien is building a shark-shaped submarine that will use pneumatics to power a working tail so that he will be able to slip in undetected with real live sharks. It sounds a little scary:
… the dive team on the Calypso “probably getting bored” decided to make the robotic shark act erratic and ” injured”. Consequently, a large female turned on the shark and gave it a “death blow” which is a bite to the gills. She came back for several more and completely destroyed the robotic shark.
That robot shark did not have a diver inside of it, but was instead helmed by forty pounds of bacon. (Thanks, Joseph!)
Fabien Cousteau: Becoming A Shark – Part I [DeeperBlue]