The drag from wind holds the responsibility for driving ocean waves in addition to the surface tension.
Explanation:
The ocean currents at the first 100 m of its surface is moved by the wind drag. Whereas, the ocean currents flowing below the thousand meters of its surface are driven by water's density gradient, which is governed by thermohaline circulation, 'thermo' means temperature and 'haline' means salinity. The centrifugal force has no role to do in driving the ocean current in its surface and earth's rotation causes the Coriolis effect which is an example of hurricane winds.
after earth cooled down from being a large ball of molten lava , the water vapour in gaseous state turned into liquid and it poured rain for thousands of years filling all the oceans we see now and as the rocks were filled with salts and minerals the ocean became salty
