The Pacific and Arctic Oceans are two of the world's five major oceans. The Pacific OCEAN is the largest OCEAN in the world, covering an area of about 63 million square miles. It is bounded by the Americas to the east, Asia and Australia to the west, and the Arctic OCEAN to the north. The Arctic OCEAN is the smallest and shallowest of the world's five major oceans, covering an area of about 5.4 million square miles. It is located in the northern hemisphere and is surrounded by the continents of Europe, Asia, and North America.