Buried deep under the Pacific Ocean, the Tamu Massif has been identified as the largest single volcano ever discovered on ...

A vast eruption beneath the southwest Pacific Ocean has been confirmed as the largest volcanic event ever recorded on the ocean floor. The 2012 explosion at the Havre volcano, near New Zealand, ...

An active underwater volcano off Grenada's northern coast called Kick 'em Jenny was rumbling Thursday and regional disaster authorities were put on alert, though they said it posed no threat of ...

Hydrothermal activity detected for the first time in the underwater volcano between Tenerife and Gran Canaria. Experts issue warning.

SAN FRANCISCO — Though volcanoes dot the face of the planet and can be found on every continent, researchers say most of Earth's volcanic eruptions happen in a dark and faraway place: deep underwater.