Wanderlust World Wanderlust World Earth has five recognized oceans, each with distinct boundaries and characteristics:
The largest and deepest ocean, covering about 60% of Earth's surface. It stretches from the Arctic in the north to the Southern Ocean in the south, bounded by the Americas to the east and Asia/Australia to the west.
The second-largest, covering ~20% of Earth's surface. It lies between the Americas (west) and Europe/Africa (east), extending from the Arctic to the Southern Ocean.
The third-largest (~15% of Earth's surface), bordered by Africa, Asia, and Australia. Its northern reaches include the Arabian Sea and Persian Gulf; it meets the Southern Ocean near 60°S latitude.
The smallest and shallowest (~3% of Earth's surface), centered on the North Pole and surrounded by North America, Europe, and Asia. Much of it is covered by sea ice year-round.
The newest officially recognized ocean (2000 by IHO), encircling Antarctica from the coast north to 60°S latitude. It connects the Pacific, Atlantic, and Indian Oceans via the Antarctic Circumpolar Current.