The Southern Water Skink (Eulamprus tympanum) is a medium-sized (maximum snout-vent length c.100 mm) species of skink

Skink

Skinks are lizards belonging to the family Scincidae. Together with several other lizard families, including Lacertidae , they comprise the superfamily or infraorder Scincomorpha...

 that is endemic to Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

. They are found in Victoria as well as on Tasmania

Tasmania

Tasmania is an Australian island and state. It is south of the continent, separated by Bass Strait. The state includes the island of Tasmania—the 26th largest island in the world—and the surrounding islands. The state has a population of 507,626 , of whom almost half reside in the greater Hobart...

's Rodondo Island

Rodondo Island

Rodondo Island is a visually striking granite island, ringed by steep cliffs up to 200 m high, with an area of 106 ha and a high point of 350 m, in south-eastern Australia. It is part of Tasmania’s Rodondo Group, lying in northern Bass Strait only 10 km south of Wilsons Promontory in Victoria, and...

 in Bass Strait

Bass Strait

Bass Strait is a sea strait separating Tasmania from the south of the Australian mainland, specifically the state of Victoria.-Extent:The International Hydrographic Organization defines the limits of the Bass Strait as follows:...

. They are viviparous; mating in spring, and giving birth in mid to late summer. They usually live near small creeks, seeking small prey such as invertebrates, tadpoles, small frogs and other small skinks.