Blanche Rock
Encyclopedia
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
.
and wader
species are the Pacific Gull
, Sooty Oystercatcher
and Black-faced Cormorant
.
Hectare
The hectare is a metric unit of area defined as 10,000 square metres , and primarily used in the measurement of land. In 1795, when the metric system was introduced, the are was defined as being 100 square metres and the hectare was thus 100 ares or 1/100 km2...
dolerite
Diabase
Diabase or dolerite is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro. In North American usage, the term diabase refers to the fresh rock, whilst elsewhere the term dolerite is used for the fresh rock and diabase refers to altered material...
islet in south-eastern 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...
. It is part of the Actaeon Island Group, lying close to the south-eastern coast of 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...
, at the southern entrance to the D'Entrecasteaux Channel
D'Entrecasteaux Channel
The D'Entrecasteaux Channel is a region of water between Bruny Island and the south-east of the mainland of Tasmania. It extends between the estuaries of the Derwent, and the Huon Rivers...
between Bruny Island and the mainland. It is part of the South Bruny National Park
South Bruny National Park
South Bruny National Park is located on Bruny Island, Tasmania, Australia, about 50 km south of Hobart. The park contains the Cape Bruny Lighthouse. The highest point of the park is Mount Bruny at 504 m...
.
Fauna
Recorded breeding seabirdSeabird
Seabirds are birds that have adapted to life within the marine environment. While seabirds vary greatly in lifestyle, behaviour and physiology, they often exhibit striking convergent evolution, as the same environmental problems and feeding niches have resulted in similar adaptations...
and wader
Wader
Waders, called shorebirds in North America , are members of the order Charadriiformes, excluding the more marine web-footed seabird groups. The latter are the skuas , gulls , terns , skimmers , and auks...
species are the Pacific Gull
Pacific Gull
The Pacific Gull is a very large gull, native to the coasts of Australia. It is moderately common between Carnarvon in the west, and Sydney in the east, although it has become scarce in some parts of the south-east, as a result of competition from the Kelp Gull, which has "self-introduced" since...
, Sooty Oystercatcher
Sooty Oystercatcher
The Sooty Oystercatcher, Haematopus fuliginosus, is a species of oystercatcher. It is a wading bird native to Australia and commonly found on its coastline. It prefers rocky coastlines, but will occasionally live in estuaries....
and Black-faced Cormorant
Black-faced Cormorant
The Black-faced Cormorant , also known as the Black-faced Shag, is a medium-sized member of the cormorant family. Upperparts, including facial skin and bill, are black, with white underparts. It is endemic to coastal regions of southern Australia.-Ecology:The Black-faced-Cormorant feeds largely on...
.