The Pacific Ocean was named by legendary navigator Ferdinand Magellan. A resident of Portugal, Magellan renounced his loyalty to that nation after King Emanuel discarded Magellan’s petition for a post within the royal navy. Seventeen independent nations are located in the Pacific: Australia, Fiji, Samoa, Solomon Islands, Taiwan, Tonga, Japan, Kiribati, Marshall Islands, Micronesia, Nauru, New Zealand, Palau, Papua New Guinea, the Philippines, Tuvalu, and Vanuatu. The U.S. state of Hawaii is also positioned here and several island territories and possessions of Australia, Chile, France, Japan, New Zealand, United Kingdom, and the United States.The ocean floor in the eastern Pacific is dominated by the East Pacific Rise, which is a part of the worldwide Mid-Ocean Ridge system. About 3,000 km across, the rise stands about 3 km above the adjacent ocean floor. The Pacific Ocean’s endangered marine species include the dugong, sea lion, sea otter, seals, turtles, and whales. Current major environmental issues include oil pollution in the Philippine Sea and South China Sea.