Complex sentence: The northern river shark or New Guinea river shark ("Glyphis garricki") is a species of requiem shark, family Carcharhinidae, found in scattered tidal rivers and associated coastal waters in northern Australia and possibly Papua New Guinea.
Split into simpler sentences: The northern river shark or New Guinea river shark ("Glyphis garricki") is a species of requiem shark, in the family Carcharhinidae. It is found in scattered tidal rivers and associated coastal waters in northern Australia, and possibly Papua New Guinea.