What is the tallest mountain Under the oceans or seas?
The “Mt. Mauna Kea” is the tallest mountain under the seas. Even though Mount Everest is the tallest mountain on land, Mauna Kea, a mountain in the sea near Hawaii, is taller. However, most of Mauna Kea is under the sea. It is the tallest mountain in the world when measured from base to peak, its base being some 19,678 feet (5998 m) under the surface of the Pacific Ocean, which would bring its total height to 33,474 feet.
