How do ocean currents develop?
An ocean current is a continuous, directed movement of ocean water generated by the forces acting upon the water, such as the wind, Coriolis force, temperature and differences and salinity tides caused by the gravitational pull of the Moon and the Sun. Depth contours, shorelines configurations and interaction with other currents influence a current's direction and strength.
Deep ocean currents are in the depths of the oceans. Surface current are at the surface, not deep down. Deep ocean currents bring vitamins and nutrients to the shore, surface currents do not. Deep ocean currents are caused by salinity and temperature differences. Surface currents are cause by the force and impact of the wind.