Scientists just filmed Indo-Pacific leopard sharks, also known as zebra sharks, mating for the first time. But what they captured wasn't your average coupling. Most shark mating involves violent frenzies where males bite females and jockey each other for prime positions. But Dr. Hugo Lassauce, a researcher at Australia’s University of the Sunshine Coast, observed relatively calm, gentle interactions among the three sharks. The female cruised by with a male hanging off each fin. The males then to