Ocean currents off Africa and Europe. Satellite-based graphic showing ocean currents (swirling coloured lines) on a partial Earth globe centred on north-west Africa. The colours indicate ocean temperatures, ranging from the warm tropics (red) to cooler water (green) in more temperate latitudes. This view shows mostly cooler currents in the north-eastern Atlantic along the coasts of Africa and Europe, and in the Mediterranean. The dusk terminator (day-night line) is at right, marking the places from where the Sun is seen setting in the west as the Earth rotates on its axis.