Speartooth shark (Glyphis glyphis)The Speartooth Shark is a rare species found in the freshwater rivers and estuaries of northern Australia and New Guinea. Its unique adaptation to both freshwater ...

the bull shark and the speartooth shark (Glyphis glyphis). Both species can engage in river journeys of epic scale. Bull sharks, for example, have been caught 1,700 miles (2,800 kilometers ...

David Morgan received funding from the Department of the Environment, Water, Heritage and the Arts. Jeff Whitty received funding from the Department of the Environment, Water, Heritage and the Arts.