Antarctica is the highest continent on earth. The highest country is Nepal.
antarctia
Since everything is measured at sea level then a continent would be above sea level thus higher than the sea floor which would be below sea level, but there are mountains under the sea that are every bit as high as the highest mountains on any continent.
All continents have areas that are above sea level. However, Antarctica has the highest average elevation of all the continents.
It is not, the highest altitude above Sea Level is achieved by the summit of Mt. Everest.
The highest elevation above sea level is 29,017.16 feet-Mt. Everest in southern Asia.
The highest point is 445 feet above sea level.
Mt. McKinley in Alaska, at about 20,320 feet (6,194 m) above sea level, is the highest point in the United States.
continent
Manamanah
The highest point is Nevado Huascaran, which is 6,768 metres above sea level.
2.558757664866585488 Miles above sea level! :~)