The vast majority of the world's volcanoes are above sea level.
jks
They can happen in both
The Gobi Desert. :)
Volcanoes that are underwater, known as submarine volcanoes. The deepest one is the Submarine 1922 in the Celebes Sea near the Sanghie Islands of Indonesia, and it is 16,000 feet (5,000 meters) below sea level.
South America, the Andes
Mount Tenpozan in Osaka? 4.3 meters above sea level.
Areas along tectonic plate boundaries, such as the Ring of Fire around the Pacific Ocean, are likely to have volcanoes above sea level. This is due to the movement and interaction of the Earth's tectonic plates that create conditions for volcanic activity to occur.
Mt. Everest is 8848 meters above sea level (29029 feet),
Parts of France are both above and below sea level. The lowest point in France is in the Rhone River delta, below sea level, while the majority of the country is above sea level. The highest point in France is Mont Blanc, which rises to 4,810 meters (15,781 feet) above sea level.
The majority of volcanoes are found along the edges of the Pacific Rim, particularly in a region known as the "Ring of Fire." This area is characterized by a high level of tectonic activity, including subduction zones and tectonic plate boundaries, which contribute to volcanic activity. While there are some underwater volcanoes in the middle of the Pacific Ocean, the most significant and active volcanoes are located at the edges of the Pacific tectonic plate.
Generally islands are simply the top portion of volcanos that grow from the seabed to above sea level.
Larger than 1500 feet. the largest in the world is in Hawaii at over 13000 feet above sea level.