Marine biologists have identified a new species of the shark genus Hemiscyllium in the waters of eastern Papua New Guinea, expanding a remarkable group of reef-dwelling sharks known for using their four fins to ‘walk’ across the seafloor. Hemiscyllium dudgeonae, male paratype, Nubwageta, Milne Bay province, Papua New Guinea. Image credit: M.V. Erdmann. Walking sharks comprise ten similar species of carpet sharks whose identification relies on...
