Geology of the Pacific Ocean Guinea, and New Zealand lie outside the andesite line. Outside of the andesite line, volcanism is explosive; the Pacific Ring of Fire is the world's foremost belt of explosive volcanism. The Ring of Fire is named after the several hundred active volcanoes that sit above the various subduction zones. In 2009, the deepest undersea eruption ever recorded occurred at the West Mata submarine volcano, a mile beneath the ocean, close to the Tonga-Kermadec Trench, within the Ring of Fire; it was filmed by the US Jason robotic submersible which descended over . The Pacific Ocean is the only ocean which
Agriculture in the Philippines and 11 regions that produce sugarcane in the Philippines. A range from 360,000 to 390,000 hectares are devoted to sugarcane production. The largest sugarcane areas are found in the Negros Island Region, which accounts for 51% of sugarcane areas planted. This is followed by Mindanao which accounts for 20%; Luzon by 17%; Panay by 07%; and Eastern Visayas by 04%. It is estimated that , the industry provides direct employment to 700,000 sugarcane workers spread across 19 sugar producing provinces. Sugar growing in the Philippines pre-dates colonial Spanish contact. Sugar became the most important agricultural export of the Philippines between