Pumice strewn across Coast beaches was caused by an underwater volcano eruption – about 18 months ago

Pumice rafts from submarine volcanos are being tracked using

Pumice island size of Manhattan floating in Pacific after underwater volcano erupts, Science & Tech News

New island forms near Japan after undersea volcano erupts

How an undersea volcano nearly sidelined this Navy ship

A close-up look at an uncommon underwater eruption

The Largest Underwater Volcano Explosion, We Almost Missed, Mach

Underwater volcano eruption spews huge mass of small volcanic

List of large volcanic eruptions - Wikipedia

Japan Volcano Islands, Part 2 of 2