Which ocean is the largest by surface area and volume?

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Map graphic showing the boundaries of the five oceans-Pacific, Atlantic, Indian, Arctic, and Southern-using color-coded regions. Four different map projections are included: North Pole view, South Pole view, International Date Line view, and Greenwich Meridian view, each displaying the oceans' extents around the continents. — ocean Earth's oceans and their marginal seas cover nearly 71 percent of the planet's surface.

The Pacific Ocean is the largest ocean on Earth in both surface area and volume. It covers approximately one-third of the globe's surface, with an area of about 65.144 million square miles (168.723 million square km).12

The Pacific Ocean contains more than double the water volume of the Atlantic Ocean, which is the next largest division of the world's oceans. Additionally, the Pacific is the deepest ocean, with a mean depth of approximately 14,040 feet (4,280 meters) and the world's deepest known point, the Challenger Deep in the Mariana Trench.123