A 2022 satellite photo shows a large plume of discolored water rising from the undersea Kavachi volcano, during an eruption ...

Located on the Juan de Fuca Ridge, some 480 kilometers (300 miles) off the US west coast, Axial is the most active submarine volcano in the northeast Pacific, erupting with sufficient regularity ...

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 ...

The Axial Seamount submarine volcano exhibits an inflation–deflation cycle comparable to similar volcanoes on land. Measurements of ocean bottom pressure document the entire inflation ...

growing magma chamber has been discovered beneath the Kolumbo submarine volcano northeast of Santorini. This finding has escalated fears since magma accumulation is commonly an indicator of imminent ...

North Korea unveiled for the first time a nuclear-powered submarine under construction, a weapons system that can pose a major security threat to South Korea and the US. State media on Saturday ...

it's possible we'll discover unknown underwater volcanoes. 19:58 There are many things we don't understand, and it's a lot of work, but it's an exciting field. Approximately 60% of the world's ...

It could mean a volcano that erupts regularly but is currently quiet, or it could refer to a volcano that probably won't ever erupt again. 5 fast facts about volcanoes Volcanic ash is made of ...

By Choe Sang-Hun Reporting from Seoul North Korea said on Saturday that it was building its first nuclear-powered submarine to enhance its nuclear weapons abilities, and the state news media ...