Bermuda High Sea

Bermuda lies near the western fringe of the Sargasso Sea, a broad region of the North Atlantic defined by circulation rather than by a coastline. The Gulf Stream runs along its western side, while the North Atlantic Current lies to the north, the Canary Current to the east, and the North Atlantic Equatorial Current to the south. Together they frame the North Atlantic Gyre, producing a sea whose borders are moving belts of water.

The floating mats of brown Sargassum give the region its name. Portuguese navigators used a word derived from the seaweed, and in 1492 Christopher Columbus recorded fears that such vegetation might trap his ships or conceal shallow ground. His concern also included the unusually light winds of the area. These details show why sailors interpreted calm water through both practical danger and uncertainty.

The water beneath the mats is famous for its deep blue colour and clarity, with visibility reaching about sixty metres. Bermuda’s proximity places the island at the sea’s western threshold rather than at its centre. For the surrounding ocean, the distinction matters: currents, floating plants, and long sight lines describe the setting more accurately than any fixed shore. The sea is thus an open-water zone of passage, where winds and ocean circulation shape what voyagers encounter.