The Three Sisters Island or Three Sisters Islands are three small and rocky
granite
Granite () is a coarse-grained (phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies undergro ...
island
An island (or isle) is an isolated piece of habitat that is surrounded by a dramatically different habitat, such as water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island ...
s, with a collective land area of , located in the
Bass Strait
Bass Strait () is a strait separating the island state of Tasmania from the Australian mainland (more specifically the coast of Victoria, with the exception of the land border across Boundary Islet). The strait provides the most direct waterwa ...
, lying off the north coast of
Tasmania
)
, nickname =
, image_map = Tasmania in Australia.svg
, map_caption = Location of Tasmania in AustraliaCoordinates:
, subdivision_type = Country
, subdi ...
,
Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...
, between the towns of
Penguin
Penguins (order (biology), order List of Sphenisciformes by population, Sphenisciformes , family (biology), family Spheniscidae ) are a group of Water bird, aquatic flightless birds. They live almost exclusively in the Southern Hemisphere: on ...
and
Ulverstone.
The islands are steep-sided. Their vegetation of sparse coastal scrub is largely limited to their summits. Because landings are difficult owing to the lack of beaches and safe anchoring points they are little affected by human visitation and disturbance, although
Australian fur seal
The brown fur seal (''Arctocephalus pusillus''), also known as the Cape fur seal, South African fur seal and Australian fur seal, is a species of fur seal.
Description
The brown fur seal is the largest and most robust member of the fur seals. ...
s
haul-out
Hauling-out is a ethology, behaviour associated with pinnipeds (true seals, sea lions, fur seals and walruses) temporarily leaving the water. Hauling-out typically occurs between periods of foraging activity. Rather than remain in the water, pin ...
on the lowest of them. Along with the neighbouring
Goat Island Goat Island (or Goat Islands) may refer to:
Arts
* Goat Island (performance group), a Chicago-based company
* ''Goat Island'' (play), ''Delitto all'isola delle capre'', by Ugo Betti
Places
Australia
* Goat Island (Port Jackson) in Sydney Harbou ...
, they are part of the Three Sisters – Goat Island Nature Reserve.
[
]
Birds
The island group has been identified as an Important Bird Area
An Important Bird and Biodiversity Area (IBA) is an area identified using an internationally agreed set of criteria as being globally important for the conservation of bird populations.
IBA was developed and sites are identified by BirdLife Int ...
(IBA) by BirdLife International
BirdLife International is a global partnership of non-governmental organizations that strives to conserve birds and their habitats. BirdLife International's priorities include preventing extinction of bird species, identifying and safeguarding ...
because, with up to 400 breeding pairs, it supports over 1% of the world population of black-faced cormorant
The black-faced cormorant (''Phalacrocorax fuscescens''), 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 coas ...
s.[BirdLife International. (2011). Important Bird Areas factsheet: Three Sisters (Bass Strait). Downloaded from http://www.birdlife.org on 2011-11-05.]
See also
* List of islands of Tasmania
References
Important Bird Areas of Tasmania
North West Tasmania
Islands of Bass Strait
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