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For the first time, researchers have documented a shark producing sound; challenging the long-held belief that these silent predators communicate only through body language and movement. The breakthrough came when marine biologist Carolin Nieder, then a Ph.D. student at the University of Auckland, noticed an unusual crackling noise while handling rig sharks (Mustelus lenticulatus), a small species native to New Zealand’s coastal waters. Intrigued, Nieder and her team designed experiments to test