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Antarctic

geography Maturity 7-9 Next article →

The Antarctic is a massive polar region surrounding the South Pole.

Orthographic projection centered on the Prince Edward Island
Orthographic projection centered on the Prince Edward Island

It sits within the Antarctic Circle and is the opposite of the Arctic. This region includes the continent of Antarctica and the Kerguelen Plateau. It also encompasses various island territories located on the Antarctic Plate.

AntarcticPlate
AntarcticPlate

The region stretches across the Southern Ocean. It covers roughly 20 percent of the Southern Hemisphere. The continent itself makes up 5.5 percent of that area.

Antarctica 6400px from Blue Marble
Antarctica 6400px from Blue Marble

A natural boundary defines much of this environment. This boundary is called the Antarctic Convergence. It is a transition zone where cold Southern Ocean waters meet warmer northern waters. This convergence changes its position based on the seasons. Because it moves, scientists use specific points to approximate the line.

Antarctic-Overview-Map-EN
Antarctic-Overview-Map-EN

The area south of 60°S latitude is managed by the Antarctic Treaty System. This system governs the continent and several archipelagos. These include the South Shetland Islands and the Balleny Islands. Other islands like Peter I Island and Scott Island are also included.

The biology of the region is quite unique. Most of the continent is covered by permanent ice and snow. Less than 1 percent of the land is actually exposed. Only two species of flowering plants live there. These are Antarctic hair grass and Antarctic pearlwort. You can also find mosses, lichens, and various fungi.

Mt Herschel, Antarctica, Jan 2006
Mt Herschel, Antarctica, Jan 2006

Marine life is very active in the surrounding waters. Antarctic krill are a vital part of the food web.

Antarctic krill (Euphausia superba)
Antarctic krill (Euphausia superba)

Many animals rely on these small creatures. These include whales, seals, and various penguin species.

You might also find colossal squid or Antarctic icefish here.

Humans have a long history of exploring these waters. The first recorded sighting was by Gabriel de Castilla in 1603. He saw distant, snow-capped mountains. In 1675, Anthony de la Roché discovered South Georgia Island.

Expeditions in Antarctica before 1897
Expeditions in Antarctica before 1897

The first confirmed sighting of the continent occurred in 1820. This was achieved by a Russian expedition led by Bellingshausen and Lazarev. Humans have even been born in this remote place. James Kerguelen Robinson was the first person born on an Antarctic island in 1859. Emilio Palma was the first person born on the continent in 1978.

SPSM.05
SPSM.05

There are no permanent countries in Antarctica. Instead, international systems manage the land and resources. The Antarctic Treaty System protects everything south of 60°S. The Convention for the Conservation of Antarctic Marine Living Resources manages fishing. This commission is headquartered in Hobart, Australia. They use fishing quotas and satellite surveillance to protect life.

Grytviken museum
Grytviken museum

Some islands north of the convergence are under national jurisdiction. For example, the United Kingdom manages South Georgia. Norway manages Bouvet Island, and Australia manages Heard and McDonald Islands.

Climate change is a major concern for the region. The melting of the Antarctic ice sheet is a serious issue. This melting has a high potential to increase global sea levels. It also disrupts the Southern Ocean overturning circulation.

NOAA SMOC changes
NOAA SMOC changes

This circulation is a system of moving water. Changes in this flow can affect the local climate. It can also change how marine ecosystems function. Protecting these areas is a global priority. The South Georgia and South Sandwich Islands Marine Protection Area is a massive protected zone. It was created in 2012 to safeguard the environment.

Tourism is also a growing part of the Antarctic story. More than 40,000 tourists visit the region every year. Most travelers go to the Antarctic Peninsula or South Georgia.

Port of Ushuaia, Argentina
Port of Ushuaia, Argentina

Experts have discussed the impact of this growth. They worry about the ecology and traveler safety. Because the region surrounds the South Pole, it sits in all time zones. However, stations usually use the time zone of their home country. This helps scientists stay connected to the world they study.

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🖼️ Images & Media (12)
Antarctic-Overview-Map-EN.tif
File:AntarcticPlate.png
AntarcticPlate.png
File:Antarctica 6400px from Blue Marble.jpg
Antarctica 6400px from Blue Marble.jpg
File:Orthographic projection centered on the Prince Edward Island.png
Orthographic projection centered on the...
File:Antarctic krill (Euphausia superba).jpg
Antarctic krill (Euphausia superba).jpg
File:South Shetland-2016-Deception Island%E2%80%93Chinstrap penguin (Pygoscelis antarctica) 04.jpg
South Shetland-2016-Deception...
File:Mt Herschel, Antarctica, Jan 2006.jpg
Mt Herschel, Antarctica, Jan 2006.jpg
File:NOAA SMOC changes.png
NOAA SMOC changes.png
File:Expeditions in Antarctica before 1897.svg
Expeditions in Antarctica before 1897.svg
File:Port of Ushuaia, Argentina.jpg
Port of Ushuaia, Argentina.jpg
File:SPSM.05.jpg
SPSM.05.jpg
File:Grytviken museum.jpg
Grytviken museum.jpg
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