The Pacific Ocean is the largest and deepest ocean on Earth, covering more than 63 million square miles. It stretches from the Arctic Ocean in the north to the Southern Ocean in the south, bordered by Asia and Australia to the west, and the Americas to the east. Known for its vast size and deep trenches, such as the Mariana Trench, it plays a crucial role in global weather patterns and marine biodiversity. The Pacific is home to diverse ecosystems, from tropical reefs to cold-water zones. It has a profound influence on global trade, climate, and the cultures of the Pacific Rim.