Nearly a mile deep and about 700 miles northwest of San Francisco, the volcano known as Axial Seamount is drawing increasing scrutiny from scientists who only discovered its existence in the 1980s.

The three-person submersible was 8,200 feet deep in the Pacific when its occupants saw flashes of molten lava.

From a research submersible, scientists saw hardened lava, dead tube worms and orange flashes from an eruption in the East Pacific Rise ...

During previous eruptions, the small plants and animals living on the hydrothermal ... to collect data on the East Pacific Rise when they noticed the once-vibrant Tica vents were no longer teeming ...

One of the Pacific Ocean’s lesser-known volcanoes will blow its vent in the coming months, causing 10,000 earthquakes in one ...

The groundbreaking new discoveries were made in fluid-filled cavities nestled between two converging crusts in the East Pacific Rise hydrothermal vent field. The team of researchers, led by the ...

A recent expedition discovered giant ocean worms inside hidden underwater cavities in the East Pacific Rise, a volcanically active ... and viruses inhabited the subseafloor crust beneath hydrothermal ...

A large cluster of tubeworms at the East Pacific Rise, 8,200 feet deep. Researchers using a deep sea rover to search beneath hydrothermal vents uncovered a series of subsurface chambers that serve ...