Antarctica is a proper noun. Antarctica is (1) an extremely cold continent at the south pole almost entirely below the Antarctic Circle; covered by an ice cap up to 13,000 feet deep.
The following articles provide more information about the proper noun Antarctica.
Antarctica currently hosts an ever-rotating group of scientists who study the unique and pristine environment there. However, Antarctica has no permanent residents and no native population.
Antarctica, the southernmost continent on Earth, is home to migratory birds and penguins but no reptiles or land mammals. Very little plant life can survive in the cold, dry climate of Antarctica.