Deep sea coral and sponges sit on the summit of the Cook seamount, seen from the Pisces V submersible during a dive to the previously unexplored underwater volcano off the coast of Hawaii’s Big ...

Deep beneath the surface of the Pacific Ocean, something massive is stirring. Scientists are watching one of the most ...

An underwater volcano near Tonga revealed how sediment spreads, disrupts marine life, and raises questions about deep-sea ...

The deep-sea volcanoes beneath Earth’s oceans may offer vital clues in the search for alien life on Europa, one of Jupiter’s moons. With a $621,000 award from NASA, University of Massachusetts Amherst ...

It started out as a routine expedition to learn more about the common, though rarely studied, phenomena of undersea volcanoes. But this international group of scientists got more than they ...

There are around 1,900 active volcanoes on land or as islands. The number of submarine volcanoes is estimated to be much higher. Exact numbers are not known because the deep sea is largely unexplored.

A mild earthquake struck the active deep-sea volcano off the Big Island Wednesday night but didn’t appear to have any impact on other nearby volcanoes and no significant damage was reported.

Scientists have witnessed the eruption of the deepest submarine volcano ever discovered, capturing for the first time video of fiery bubbles of molten lava as they exploded 4,000 feet (1,200 ...

A three-man submarine went down into the abyss and drew within sight of something no human had ever laid eyes on: Cook seamount, a 13,000-foot extinct volcano at the bottom of the sea.

GEOLOGIST SEAMOUNTS, Hawaii -- The turquoise waters became darker and darker, and squiggly glow-in-dark marine creatures began to glide past in the inky depths like ghosts.

GEOLOGIST SEAMOUNTS, Hawaii — The turquoise waters became darker and darker, and squiggly glow-in-dark marine creatures began to glide past in the inky depths like ghosts.