Calm seas lie. At the sunlit skin, wind drags water sideways and, under the Coriolis effect, turns that push into Ekman transport, a slanting escape from the obvious. It does not rest. Where winds force water apart, upwelling lifts colder, nutrient-rich water; where water converges, downwelling presses it below. Beneath the glitter, currents exchange heat, salt, and dissolved gases across distance...More