What is the largest ocean on Earth?

The Pacific Ocean is the largest ocean on Earth, covering more than 63 million square miles (165 million square kilometers) and accounting for about 63% of the Earth’s oceanic area. It is bounded by Asia and Australia to the west, and the Americas to the east, and it contains numerous islands and extensive sea routes.

The Pacific Ocean is not only distinguished by its size but also by its depth, hosting the Mariana Trench, which is the deepest point in the world’s oceans. Its vast area influences global weather patterns and marine biodiversity significantly, making it critical to the Earth’s ecological health. This context helps to understand why it is recognized as the largest ocean, both in terms of surface area and volume, compared to the Atlantic, Indian, and Arctic Oceans, which are smaller in size and volume.