The names of Earth's five oceans are the Arctic, Atlantic, Indian, Pacific and Southern Oceans. At 155,557,000 square kilometers, the Pacific Ocean is the world's largest ocean, while the Arctic Ocean is the smallest at 14,056,000 square kilometers.
The Arctic Ocean covers the northernmost area of Earth's surface, and many parts of it remain frozen because of the region's extremely low temperatures. In 2000, the International Hydrographic Organization added the Southern Ocean as a recognized body of water. The Southern Ocean covers the southernmost area of the Earth, surrounding Antarctica. The Pacific Ocean covers Earth's surface between the western coasts of North and South America and the eastern coasts of Asia and Australia. The Atlantic Ocean covers Earth's surface between the eastern coasts of North and South America and the western coasts of Europe and Africa. The Indian Ocean, which is 68,556,000 square kilometers in size, is located south of Asia, east of Africa and west of Australia.
Earth's surface is approximately 71 percent water, with the five oceans covering a majority of the planet. The greatest ocean depth is at the Mariana Trench in the Pacific Ocean, which measures 35,827 feet deep. The next greatest ocean depth is the Puerto Rico Trench in the Atlantic Ocean, measuring 30,246 feet deep.