ANSWERS: 2
  • The largest underwater mountain is a part of of the Azores Islands. Named Mount Pico, it is 7,613 feet above sea surface, 20,000 feet below sea surface to sea floor.
  • The tallest underwater mountain on Earth is Mauna Kea on the big island of Hawaii. Mauna Kea rises 13,796 feet above sea level and rises a total of 33,476 feet from the Pacific Ocean floor.

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