What is the largest ocean on Earth?

The largest ocean on Earth is the Pacific Ocean, which covers more than 63 million square miles (165 million square kilometers) and extends from the Arctic in the north to the Southern Ocean, and from Asia and Australia on the west to the Americas on the east. This immense body of water is not only the largest ocean but also the deepest, containing the Mariana Trench, which reaches depths of over 36,000 feet (10,973 meters).

The other oceans, while significant, are smaller in both area and volume. The Indian Ocean is the third largest ocean and covers about 27 million square miles (70 million square kilometers). The Atlantic Ocean, the second largest, measures approximately 41 million square miles (106 million square kilometers). The Arctic Ocean is the smallest, with an area of about 5.4 million square miles (14 million square kilometers). Therefore, the Pacific Ocean's vast size and volume make it the largest ocean on our planet, distinguishing it from the others.