Scientists believe that 80 percent of the volcanic eruptions on Earth take place in the ocean. Most of these volcanoes are thousands of feet deep, and difficult to find. But in May of 2009, scientists captured the deepest ocean eruption ever found. Nearly 4000 feet below the surface of the Pacific Ocean — in an area between Samoa, Fiji and Tonga - the West Mata volcano was discovered. The explosions of molten rock were spectacular. This volcano was producing Boninite lavas — believed to be among the hottest erupting on Earth.