(Credit: DC Shoes/YouTube) Motorcycle stunts have come a long way from the circus stunts of yesteryear, jumping over snakes or through hoops of fire. But until recently, there was one place they hadn't gone: the ocean. That was, until Aussie daredevil and surfer Robbie Maddison recently released his 4-minute clip of riding a modified motorcycle on the waves of Tahiti. It’s a jaw-dropping stunt that redefines what we thought was possible, but it isn’t a miracle. It required a lot of patience, practice, and physics. Here’s how he did it.