The Burrunan dolphin (Tursiops australis) is a species of bottlenose dolphin found in parts of Victoria, Australia. It was recognised as a species in 2011. Though the species classification is contested by some, a larger body of evidence now exists, further validating the Burrunan as a separate species to the common and Indo-Pacific bottlenose dolphins (T. truncatus and T. aduncus, respectively). There are only two known resident populations in Victoria, Australia, with an estimated total population size of less than 180 individuals, and the predicted effective populations sizes small; Port Phillip Bay: 81.5, Gippsland Lakes and Tasmania: 65.5.