When we think of underwater vehicles our minds tend to jump to sci-fi and fantasy films. Ships like 'SeaQuest', James Bond's cars and the 'Nautilus' that couldn't possibly exist. Or could they? Every day technology is improving and we're finding new ways to explore our world. Considering our planet's surface is 71% water we definitely need aquatic vehicles. Submarines and submersibles are no longer the stuff of fiction. They are becoming more advanced, but for every advancement there are oddities. While there are still quite impressive there are some underwater vehicles that are just plain bizarre.