Outer Sister Island, part of the Sister Islands Conservation Area, is a granite and dolerite island, with an area of 545 hectares (2.10 sq mi), located in Bass Strait, Tasmania, Australia.
 View of Outer Sister Island, looking west | |
  Outer Sister Island Location of Outer Sister Island in Bass Strait | |
| Geography | |
|---|---|
| Location | Bass Strait |
| Coordinates | 39°39′S 147°59′E / 39.650°S 147.983°E |
| Archipelago | Furneaux Group |
| Area | 5.45 km2 (2.10 sq mi) |
| Administration | |
Australia | |
| State | Tasmania |
Location and features
The Outer Sister Island is located north of Flinders Island in the Furneaux Group. The island is grazed by sheep and annual muttonbirding takes place.[1]
Seabirds and waders recorded as breeding on the island include little penguin, short-tailed shearwater, silver gull, Pacific gull and sooty oystercatcher. Resident reptiles are the metallic skink, White's skink, white-lipped snake, lowland copperhead and tiger snake. Apart from the sheep, mammals present on the island include the Tasmanian pademelon and the introduced house mouse, as well as feral cats.[1]
