Submarine volcanoes: expedition sheds light on eruptions

By Peter Spinks
Updated May 8 2015 - 5:10pm, first published April 20 2015 - 12:15am

Some of the world's biggest and most powerful volcanoes probably lie not on land but deep beneath the ocean waves. Occupying vast stretches of ocean floor, chains of these submarine volcanoes may extend for hundreds or even thousands of kilometres.

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