Adelie penguins drift on ice floe in the Southern Ocean off the Australian Antarctic Territory. Picture: Frederique Olivier LINK
Antarctica is Earth’s southernmost continent, overlying the South Pole. It is situated in the Antarctica region of the southern hemisphere, almost entirely south of the Antarctic Circle, and is surrounded by the Southern Ocean. At 14.4 million km2 (5.4 million sq mi), it is the fifth-largest continent in area after Asia, Africa, North America, and South America. About 98% of Antarctica is covered by ice, which averages at least 1.6 kilometers (1.0 mi) in thickness LINK
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