What is the name of the largest sea in the world by area?

The largest sea in the world by area is the Philippine Sea. It is a marginal sea of the western Pacific, lying east of the Philippine Archipelago and covering roughly 5 million square kilometers, with some compilations estimating about 5.695 million square kilometers.

The Philippine Sea is bordered by the Philippines and Taiwan to the west, Japan to the north, the Mariana Islands to the east, and Palau to the south. Its floor rests largely on the Philippine Sea Plate, an oceanic tectonic plate surrounded by active boundaries and deep trenches.

A common mix-up is the Coral Sea, which is also enormous and ranks second in many lists. The Philippine Sea is distinct from the South China Sea, which lies west of the Philippines, and from the Philippine Sea Plate, the geological structure beneath it. The area depends somewhat on how international boundaries are drawn, but the Philippine Sea remains the standard answer for the world's largest sea.