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
Koreans in the Philippines when it occupied the Philippines during World War II; three, also from Uiju, are known to have married local women and chose to remain in the country permanently. One of them, Pak Yun-hwa, went on to establish the Korean Association Philippines Inc. in 1969, which would grow to become the country's largest Korean organization. The second phase of Korean settlement in the Philippines consisted of the war brides of Filipino soldiers who fought on the side of the UN Forces in the Korean War. About 30 moved to the Philippines with their husbands in the 1960s; in 1975, they formed