Earth

Geography

Map references:

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Time Zones, Coordinates.

Related Topics:
Time Zone - Coordinate

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Biggest geographic subdivision

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Continents, Oceans

Related Topics:
Continent - Ocean

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Area:

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• total: 510.073 million km²
• land: 148.94 million km²
• water: 361.132 million km²
• note: 70.8 % of the world's surface is covered by water, 29.2 % is exposed land

Land boundaries:

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the land boundaries in the world total 251,480 km (not counting shared boundaries twice)

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Coastline:

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356,000 km

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Maritime claims: see United Nations Convention on the Law of the Sea

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• contiguous zone: 24 nautical miles (44.4 km) claimed by most, but can vary
• continental shelf: 200 m depth claimed by most or to depth of exploitation; others claim 200 nautical miles (370.4 km) or to the edge of the continental margin
• exclusive fishing zone: 200 nautical miles (370.4 km) claimed by most, but can vary
• exclusive economic zone: 200 nautical miles (370.4 km) claimed by most, but can vary
• territorial sea: 12 nautical miles (22.2 km) claimed by most, but can vary
• Note: boundary situations with neighboring states prevent many countries from extending their fishing or economic zones to a full 200 nautical miles (370.4 km)
• 42 nations and other areas are completely landlocked (see list of landlocked countries)