Question

how does ocean current originate or form

Answer 1

An ocean current is a seasonal directed movement of seawater generated by forces acting upon this mean flow, such as breaking waves, wind, the Coriolis effect, cabbeling, temperature and salinity differences, while tides are caused by the gravitational pull of the Sun and Moon.

Answer 2

Ocean currents can be generated by wind, density difference in water masses caused by temperature and salinity variations, gravity and events such as earthquakes.