Most volcanic eruptions on Earth occur in the deep ocean. Scientists have discovered the West Mata volcano, about 1,200 meters below the surface of the ocean.

Courtesy of NOAA Pacific Marine Environmental Laboratory/National Science Foundation/NOAA National Ocean Service/NOAA Office of Ocean Exploration and Research/NOAA's National Geophysical Data Center/NASA-Goddard Space Flight Center Scientific Visualization Studio/University of Washington/Woods Hole Oceanographic Institution