article_snippet.sent: Yet the majority of the world’s volcanoes are found deep underwater where immense water pressure does weird things to the lava that bubbles out of the majority of the world’s volcanoes.
article_snippet.sent: Rather than the explosive roar emitted by their cousins on land, underwater volcanoes give off a muted thrum instead.
article_snippet.sent: Volcanoes lurking hidden under the world's oceans may play a far greater role in climate change than previously though.
article_snippet.sent: Scientists found that underwater volcanoes, which were long assumed to ooze lava at relatively steady rates, in fact erupt in pulses.
article_snippet.sent: Bob Dziak, an oceanographer at the National Oceanic and Atmospheric Administration's Pacific Marine Environmental Laboratory in Newport, Oregon who led the research, said: ‘Detecting seafloor volcanism is important because the research is a very significant process in terms of chemical impacts on the ocean and natural hazards.
article_snippet.sent: Even though roughly 70 per cent of Earth’s volcanic activity occurs under the water, the water has remained largely unobserved.
article_snippet.sent: Underwater volcanoes are known to be widespread on the floor of the world's oceans at joins in the tectonic plates.
article_snippet.sent: Most are located in the deep ocean, where Underwater volcanoes activity can be difficult to measure, although some in shallow water can erupt with enough lava to create new islands.
article_snippet.sent: In the latest study, published in the journal Geophysical Research Letters, the scientists used an underwater vehicle to visit the West Mata Volcano, 3,937 feet (1,200 metres) below the surface of the Pacific Ocean near Samoa.
article_snippet.sent: Eruptions from underwater volcanoes can sometimes form new islands like this one off the coast of Japan. 
article_snippet.sent: Scientists have struggled to study underwater volcanoes like the one above as Scientists are hard to spot erupting. 
highlights_snippet.sent: Geologists used undersea vehicles to record  two underwater volcanic vents - called Hades and Prometheus - as they erupted near Samoa .
  