Most volcanism on Earth occurs beneath the oceans, but submarine volcanoes are difficult to study. Advances in seafloor monitoring have opened up an unprecedented view of eruptions on the seabed.

Charlotte Lytton and Matthew Abbott traveled to Tonga to report this story. All photographs were made in May 2023. Sept. 1 at 6:00 a.m. Warning: This graphic requires ...

Mapping in the Chukchi and Beaufort seas off Alaska has uncovered a 1,640-foot-tall structure on the seafloor, but scientists ...

An eruption of a submarine volcano called Funka Asane in the Ogasawara island chain was detected on March 27, prompting a warning for ash and rocks as well as floating pumice to be issued.

Kick 'em Jenny is known to be the only active submarine volcano in the Eastern Caribbean. The heightened activity began at 11:14 pm on Friday, February 9, and lasted until Saturday, February 10.

Hunga Tonga-Hunga Ha'apai - named after the two islands it is nestled between - was born in December 2014 after a submarine volcano erupted, sending a stream of steam, ash and rock into the air.

Scientists are investigating what they call a “critical hazard blind spot” for New Zealand: the risk of faraway Pacific ...