The Sargasso Sea is located in the Atlantic Ocean.
Unlike most seas, the Sargasso Sea has no coastline. Its boundaries are formed by the North Atlantic’s major circulation system: the Gulf Stream to the west, the North Atlantic Current to the north, the Canary Current to the east, and the North Atlantic Equatorial Current to the south.
The sea is named for Sargassum, a floating brown seaweed that forms large mats at the surface. Portuguese sailors gave the region its name after observing the weed in the open ocean. Sargassum provides shelter and feeding habitat for many marine organisms, although unusually large accumulations can also wash onto beaches.
The Sargasso Sea is associated with the legendary Bermuda Triangle, but the two regions are not identical. The Sargasso Sea is a scientifically defined area of ocean circulation, while the Bermuda Triangle has no universally agreed official boundaries.