Double magma bubble forms at Hades Vent at West Mata submarine volcano. An underwater volcano bursting with glowing lava bubbles - the deepest active submarine eruption seen to date - is shedding light on how volcanism can impact deep-sea life and reshape the face of the planet.
Submarine eruptions account for about three-quarters of all of Earth's volcanism, but the overlying ocean and the sheer vastness of the seafloor makes detecting and observing them difficult. The only active submarine eruptions that scientists had seen and analyzed until now were at the volcano NW Rota-1, near the island of Guam in the western Pacific.
Now researchers have witnessed the deepest active submarine eruption yet. The volcano in question, West Mata, lies near the islands of Fiji in the southwestern Pacific in the Lau Basin. Here, the rate of subduction - the process in which one massive tectonic plate dives under another, typically forming chains of volcanoes - is the highest on Earth, and the region hosts ample signs of recent submarine volcanism.