North Atlantic Equatorial Current, the four together forming a clockwise-circulating system of ocean currents termed the North Atlantic Gyre. It lies between 20° to 35° N and 40° and 70° W and is approximately 1100 km wide by 3200 km long. Bermuda is near the western fringes of the sea.

Because the Sargasso Sea is bordered by oceanic currents, its borders may change. The Canary Current in particular is widely variable, and often the line