Tallest Mountain on the Earth is in the ocean

Although Mount Everest, at 8,850m tall, is often called the tallest mountain but actually Mauna Kea, an inactive volcano on the island of Hawaii, is actually taller than mount Everest. Only 13,796 feet of Mauna Kea stands above sea level, however, if you measure it from its base, which is below sea level, it is 33,465 feet. If we put Mauna Kea and Mount Everest next to each other, Mount Kea would be 4,436 feet taller.