A massive underwater volcano known as Axial Seamount could erupt soon, completely reshaping the floor of the Pacific Ocean.

Off the coast of American Samoa, an active underwater volcano towers above the seafloor, its upper crater the site of a ...

A budding islet created by the eruption of an underwater volcano appears to ... submerged through erosion due to the soft nature of the lava. Pumice was carried by the Kuroshio Current northward ...