The answer is the Pacific Ocean.
It is the
largest and deepest of the world's major ocean basins, covering approximately 162 million square kilometers according to NOAA.

The Pacific is larger than the combined land area of all Earth's continents. It also contains Challenger Deep, the deepest known point in the world's oceans.
Why Is the Pacific Ocean Important?
The Pacific influences global weather and climate and supports enormous marine ecosystems. It also contains the Pacific Ring of Fire, where tectonic activity produces many earthquakes and volcanoes.
The other major oceans are the Atlantic, Indian, Southern, and Arctic Oceans.
Understanding ocean size helps explain Earth's geography, climate systems, marine biodiversity, and global circulation.
Read the complete Pacific Ocean and largest ocean guide.
https://thecampusreview.com/geography/largest-ocean-in-the-world/#PacificOcean #LargestOcean #Geography #OceanFacts #EarthScience