Europe is one of the seven traditional continents of the Earth. Physically and geologically, Europe is the westernmost peninsula of Eurasia, west of Asia. Europe is bound to the north by the Arctic Ocean, to the west by the Atlantic Ocean, to the south by the Mediterranean Sea, and to the southeast by the waterways adjoining the Mediterranean to and including the Black Sea and the Caucasus Mountains. On the east, Europe is divided from Asia by the water divide of the Ural Mountains and by the Caspian Sea.
Europe is the world's second-smallest continent in terms of area, covering about 10,400,000 square kilometers (4,010,000 sq mi) or 2.0% of the Earth's surface. The only continent smaller than Europe is Australia. In terms of population, it is the third-largest continent (after Asia and Africa) with a population of some 710,000,000 or about 11% of the world's population. However, the term continent can refer to a cultural and political distinction or a physiographic one, leading to various perspectives about Europe's precise borders, area, and population.