Sharks produce sounds by rubbing teeth, surprising scientists: Marine biologists have documented the first instance of sharks intentionally making sounds. Juvenile rig sharks produced clicking noises when handled, likely by rubbing their teeth together. This behavior may serve to confuse predators, challenging previous assumptions about shark sound production. Read the full story at 🔗 https://sci.sx/662202277 Credit: Paul Caiger, University of Auckland 📸 Follow us on Instagram for more excitin