The largest ocean by area is the "Pacific Ocean." Covering approximately 63 million square miles (165 million square kilometers), it exceeds the size of all the Earth's landmasses combined. The Pacific Ocean stretches from the Arctic Ocean in the north to the Southern Ocean in the south, and is bordered by Asia and Australia on the western side, and the Americas to the east. It features numerous islands and archipelagos, and is home to diverse marine ecosystems. The Pacific Ocean significantly influences global weather patterns and climate, making it a vital component of the Earth's system.