The Southern Water Skink (Eulamprus tympanum) is a medium-sized (maximum snout-vent length c.100 mm) species of skink that is endemic to Australia. They are found in Victoria as well as on Tasmania's Rodondo Island in Bass Strait. 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.