Pedra Branca is a rock islet in the

Southern Ocean The Southern Ocean, also known as the Antarctic Ocean, comprises the southernmost waters of the World Ocean, generally taken to be south of 60° S latitude and encircling Antarctica. With a size of , it is regarded as the second-small ...

, off the southern coast of

Tasmania ) , nickname = , image_map = Tasmania in Australia.svg , map_caption = Location of Tasmania in AustraliaCoordinates: , subdivision_type = Country , subdi ...

, Australia. The island is situated approximately south southeast of

South East Cape The South East Cape is a cape located at the southernmost point of the main island of Tasmania, the southernmost state of Australia. The cape is situated in the southern and south-eastern corner of the Southwest National Park, part of the Tasma ...

and is contained within the

Southwest National Park Southwest National Park is an Australian national park located in the south-west of Tasmania, bounded by the Franklin-Gordon Wild Rivers National Park to the north and the Hartz Mountains National Park to the east. It is a part of a chain of ...

, part of the

Tasmanian Wilderness The Tasmanian Wilderness World Heritage Area, abbreviated to TWWHA, is a World Heritage Site in Tasmania, Australia. It is one of the largest conservation areas in Australia, covering , or almost 25% of Tasmania. It is also one of the last ex ...

World Heritage Site A World Heritage Site is a landmark or area with legal protection by an international convention administered by the United Nations Educational, Scientific and Cultural Organization (UNESCO). World Heritage Sites are designated by UNESCO for h ...

. An erosional remnant of the Tasmanian mainland, the island is approximately long, wide, with an elevation of above sea level. The island is estimated to have separated from the Tasmanian mainland at least 15,000 years ago.

Features and location

Pedra Branca experiences wet and windy weather, and large waves. With an area of , the island is small enough to provide an example of an outcrop that lies on the border between being a rock or islet and an island. The geology features three

breccia Breccia () is a rock composed of large angular broken fragments of minerals or rocks cemented together by a fine-grained matrix. The word has its origins in the Italian language, in which it means "rubble". A breccia may have a variety of ...

cones of

dolerite Diabase (), also called dolerite () or microgabbro, is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro. Diabase dikes and sills are typically shallow intrusive bodies and often exhibit fine-grain ...

and

sandstone Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates ...

Flora and fauna

The only plant species found on the island is the succulent ''

Sarcocornia quinqueflora ''Salicornia quinqueflora'', synonym ''Sarcocornia quinqueflora'', commonly known as beaded samphire, bead weed, beaded glasswort or glasswort, is a species of succulent halophytic coastal shrub. It occurs in wetter coastal areas of Australia ...

''. Recorded breeding

seabird Seabirds (also known as marine birds) are birds that are 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 enviro ...

species include

fairy prion The fairy prion (''Pachyptila turtur'') is a small seabird with the standard prion plumage of blue-grey upperparts with a prominent dark "M" marking and white underneath. The sexes are alike. This is a small prion of the low subantarctic and sub ...

Pacific gull The Pacific gull (''Larus pacificus'') 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 re ...

silver gull The silver gull (''Chroicocephalus novaehollandiae'') is the most common gull of Australia. It has been found throughout the continent, but particularly at or near coastal areas. It is smaller than the Pacific gull (''Larus pacificus''), which ...

kelp gull The kelp gull (''Larus dominicanus''), also known as the Dominican gull, is a gull that breeds on coasts and islands through much of the Southern Hemisphere. The nominate ''L. d. dominicanus'' is the subspecies found around South America, part ...

, black-faced cormorant,

Australasian gannet The Australasian gannet (''Morus serrator''), also known as the Australian gannet or tākapu, is a large seabird of the booby and gannet family, Sulidae. Adults are mostly white, with black flight feathers at the wingtips and lining the trailin ...

, and

shy albatross The shy albatross, also known as shy mollymawk, (''Thalassarche cauta'', formerly ''Diomedea cauta''), is a medium-sized albatross that breeds on three remote islands off the coast of Tasmania, Australia, in the southern Indian Ocean. Its li ...

. Australian fur seals use the island as a regular haul-out site while

New Zealand fur seal ''Arctocephalus forsteri'' (common names include the Australasian fur seal, South Australian fur seal, New Zealand fur seal, Antipodean fur seal, or long-nosed fur seal) is a species of fur seal found mainly around southern Australia and New Z ...

s visit occasionally. The island is the only known habitat of a species of lizard, the Pedra Branca skink, ''Niveoscincus palfreymani''. An estimated 400 individuals survive, but the species is listed as vulnerable.

Important Bird Area

Together with the nearby Eddystone and Sidmouth Rock the island constitutes the Pedra Branca Important Bird Area (IBA), identified as such by BirdLife International because it supports over 1% of the world populations of shy albatrosses and Australasian gannets.

History

Abel Tasman Abel Janszoon Tasman (; 160310 October 1659) was a Dutch seafarer, explorer, and merchant, best known for his voyages of 1642 and 1644 in the service of the Dutch East India Company (VOC). He was the first known European explorer to reach New ...

led the first known European expedition to sight Tasmania. His journal entry for 29 November 1642 records that he observed a rock which was similar to a rock named Pedra Branca off China, presumably referring to the Pedra Branca in the

South China Sea The South China Sea is a marginal sea of the Western Pacific Ocean. It is bounded in the north by the shores of South China (hence the name), in the west by the Indochinese Peninsula, in the east by the islands of Taiwan and northwestern Phi ...

. The journal places Pedra Branca "about four utchmiles" from the mainland of Tasmania; a Dutch mile from this period was about , thus 4 such Dutch miles would be , which is close to the actual distance of Pedra Branca from South East Cape.

Shipwreck

On 7 February 1973 ''Nisshin Maru No. 8'', a Japanese steel

fishing vessel A fishing vessel is a boat or ship used to catch fish in the sea, or on a lake or river. Many different kinds of vessels are used in commercial, artisanal and recreational fishing. The total number of fishing vessels in the world in 2016 was ...

of led by Captain Nakayama, on its way to Hobart for a mechanical inspection, hit Pedra Branca and sank in deep water within a few minutes. In the ensuing confusion only one of the crew of 22, engineer Yoshiichi Meguro, managed to clamber onto the rocks and escape drowning. The fishing vessel ''Walrus'' rescued the survivor. The ''Nisshin Maru No. 8'' disaster led to considerable improvements in communications between the various authorities that should have been able to mount a rescue operation many hours before this one was commenced. These included direct links between Japanese fishing boats and Australian shore stations, and correcting the inability of fishing vessels to directly contact warships and military aircraft, as they were unable to contact the Hobart emergency radio station which did not operate at night.

Weather

Weather conditions in the area can be extreme, and Pedra Branca is occasionally swept by freak waves. On 15 April 2003, oceanographer Hamish Saunders drowned after being washed off Pedra Branca. The Tasmanian coroner's report includes testimony from three witnesses who described how Saunders was swept away when a "wave hit the island resulting in heavy spray coming up to and over the level". Waves were measured that day at up to by the Cape Sorell Waverider Buoy, some away.

Etymology

Pedra Branca is

Portuguese Portuguese may refer to: * anything of, from, or related to the country and nation of Portugal ** Portuguese cuisine, traditional foods ** Portuguese language, a Romance language *** Portuguese dialects, variants of the Portuguese language ** Portu ...

for "white rock". According to historian Kenneth McIntyre, Pedra Branca is one of only two Australian places with a name of Portuguese origin, the other being the

Houtman Abrolhos The Houtman Abrolhos (often called the Abrolhos Islands) is a chain of 122 islands and associated coral reefs, in the Indian Ocean off the west coast of Australia, about west of Geraldton, Western Australia. It is the southernmost true coral ...

islands in

Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to th ...

Surfing

Pedra Branca is home to a big wave surf break at a reef approximately offshore. Marti Paradisis was the first person to surf it. later, In 2008

Ross Clarke-Jones Ross Clarke-Jones (6 June 1966) is an Australian big wave surfer. He originally came from Terrigal in the Central Coast, of New South Wales, Australia where he enjoyed surfing Terrigal Haven, a point break that produces rare waves lasting for ...

and Tom Carroll joined local surfer Marti Paradisis and brothers James and Tyler Hollmer-Cross to shoot a story about it which was featured on 60 Minutes.

References

{{Southern Tasmania , state=autocollapse Protected areas of Tasmania Southern Tasmania Important Bird Areas of Tasmania Islands of South West Tasmania Maritime history of the Dutch East India Company Surfing locations in Tasmania