Ocean Currents

I'm going to tell you about the gulf stream current.
This current is caused by winds. The wind dose this by the friction created by the wind, blowing over the water.

There are 2 currents here called, the North Atlantic and and gulf stream. The north Atlantic current is deeper this is caused by the thermohline circulation, resulting from the density differences in the water.

My question is how dose the thermohline circulation made, like how dose it work and why dose it happen.

the power of currents is used by hydro dams to make electricity. when the water goes through the turbine it powers the generator and creates energy.