What ocean current?

Answer 1

Deep ocean currents are created by differences in water density. Cold or salty water is more dense and sinks, whereas warm or less salty water is less dense and rises. In polar regions, much of the ocean water is tied up in ice sheets. The salt remains in the liquid water, so the water in these areas is very salty as well as very cold. This water is consequently very dense and sinks. It is replaced by water from lower latitudes. The deep, dense water then moves slowly across the ocean floor and eventually rises in warmer latitudes. These currents are connected, and are sometimes called the ocean "conveyor belt." One circuit can take 1000 years to complete
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