Underwater volcanic eruptions near Tonga that lead to new islands, although infrequent, have occurred a few times over the last two centuries, including in 1852, 1857, 1984, and 2006.

The Kamaʻehuakanaloa seamount is an active, underwater volcano that lies 22 miles off Hawaii's southeast coast. ... an eruption of Kamaʻehuakanaloa would pose no threat to the Island of Hawaii.

According to NASA's Earth Observatory, a volcano on what's known as the Home Reef seamount began to erupt on Sept. 10. Eleven hours later, the unnamed island poked out of the water.

Flinders added that, with the volcano’s highest point still located about 990 meters (about 3,200 feet) below sea level, the vast amount of water between the seamount and the Big Island means ...

The volcano, formerly called Loihi Seamount, is about 22 miles off the Big Island’s southeastern coast and will one day become the youngest of the Hawaiian Islands when it finally grows tall ...

The work reveals how volcanic chains like the Cook–Austral Islands, Tuvalu, the Marshall Islands, and Wake seamounts are linked not only to each other but to much larger volcanic events in Earth ...

Axial Seamount, by contrast, is a volcano that, during eruptions, oozes lava — similar to the type of eruptions in Kilauea on the Big Island of Hawaii.

The islands that once stood above the surface of the ocean were the result of volcanic activity. Over millions of years, the volcanoes on the seamount erupted, expelling lava that eventually ...

A study of reef fish on a chain of volcanic seamounts and islands off the coast of Brazil has enabled scientists to extend to marine organisms the landmark theory of island biogeography. August 30, ...

During Axial Seamount's last eruption in 2015, an enormous amount of magma poured out of the volcano, including one lava flow that was about 450 feet thick, according to researchers.