Blanche Rock is a 0.07 ha dolerite islet in south-eastern Australia. It is part of the Actaeon Island Group, lying close to the south-eastern coast of Tasmania, at the southern entrance to the D'Entrecasteaux Channel between Bruny Island and the mainland. It is part of the South Bruny National Park.[1]
Recorded breeding seabird and wader species are the Pacific Gull, Sooty Oystercatcher and Black-faced Cormorant.[1]