Where is the largest active volcano in the world?

Mauna Loa (Hawaii) is the world's largest active volcano, projecting 13,677 feet above sea level, its top being over 28,000 feet above the deep ocean floor. From it's base below sea level to it's summit, Mauna Loa is taller than Mount Everest.

Tilling, R.I., 1998, Volcanoes: U.S. Geological Survey General Interest Publication, 45 p.

Brantley, S.R., 1994, Volcanoes of the United StatesU.S. Geological Survey General Interest Publication, 44 p.