There is no universally agreed definition of mountain; in the UK anything over 600m is considered a mountain, but in the USA some landscapes as low as 30m are called "mountains", also in the Gambia there is a "mountain" of 53m height. The short answer, with such an arbitary difference between hill and mountain, its impossible to say.
Mount Everest is the highest mountain above sea level in the world. Its summit is 29,026 feet above sea level.
Mount Everest
The Andes is the longest mountain range in the world above or below sea level. I think the mid-ocean ridge is the longest below sea level...but I'm not sure
HImALAYS
The tallest mountain in the world is Mount Everest It is about 5.5 miles (8.9 kilometers) above sea level."
South America
Mt. Everest, the highest mountain above sea level, is located in Mahalangur Himal of the Himalayas.
The Andes is the longest mountain range in the world above or below sea level. I think the mid-ocean ridge is the longest below sea level...but I'm not sure
K2, the second-tallest mountain in the world, is 8,611 meters (28,251 ft) above sea level.
Mt. Everest, 29,281 feet. which is the tallest mountain in the world and yes it is
K2, the second-tallest mountain in the world, is 8,611 meters (28,251 ft) above sea level.
Mount Everest is the highest mountain above sea level.