The Axial Seamount – located hundreds of miles off the coast of Oregon and nearly 5,000 feet below the Pacific Ocean’s waves – erupted in April 2015, spewing a mile’s worth of lava onto the sea floor.

(CNN) — A massive underwater mountain, otherwise known as a seamount, has been discovered on the floor of the Pacific Ocean off the coast of Guatemala. The seamount is most likely a remnant of an ...

The surprisingly circular seamount rises about 3,300 feet off the seafloor, and has “relatively steep, smooth sides,” scientists say. Saildrone image A mountain would seem to be a tough thing to miss, ...

Will the coast be toast? An increase in seismic activity has prompted predictions that a mile-wide submarine volcano named the Axial Seamount will erupt near the United States West Coast by year’s end ...

Add Yahoo as a preferred source to see more of our stories on Google. Axial Seamount is one of the most observed underwater volcanoes in the world (Getty Images) A “fascinating” eruption is ...

Seamounts can also be formed by hotspots, where magma rises through a hole in the middle of a tectonic plate and forms chains ...

A mountain would seem to be a tough thing to miss, but a new one has been found off the coast of Northern California. The seamount, as underwater mountains are called, was discovered by a seafloor ...