http://www.newsweek.com/largest-underwater-eruption-new-volcano-bigger-empire-state-building-indian-ocean-mayotte-1634558

The largest underwater eruption ever recorded has created a volcano on the seafloor that is 2,690 feet tall.

The volcano, which is twice as tall as the Empire State Building, was not present off the eastern coast of the island of Mayotte in the Indian Ocean before an earthquake shook the island 2018.