The largest ocean on Earth is the Pacific Ocean. Covering more than 63 million square miles, it extends from the Arctic Ocean in the north to the Southern Ocean in the south, separating Asia and Australia from the Americas. The Pacific Ocean is known for its vast expanse, diverse ecosystems, and significant geological features, including the Mariana Trench, the deepest point in the world's oceans. It plays a crucial role in climate regulation and is a crucial area for international trade and transportation, influencing the economies of many countries bordering its shores.