Currently, volcanic activity is exhibited only via numerous geothermal vents scattered throughout the region, including the famous Old Faithful Geyser, but within the past two million years, it has undergone three extremely large explosive eruptions, up to 2,500 times the size of the 1980 Mount St. (sciencedaily.com)
Models suggest that the moon can host geothermal vents, which would be hotspots for marine life, and now we have hints that Europa spurts plumes of water intermittently. (newscientist.com)
Giant tube worms, crabs, and shrimp live in the dark, a mile below the ocean surface, huddled around superheated geothermal vents. (discovermagazine.com)