Which way does ocean water move globally?

Along warm-water currents from the equator to the Poles.

Northern to Southern Oceans

Explanation:

A process known as thermohaline circulation is responsible for the movement of water. This process is also known as ocean's conveyor belt.

It moves the massive water current around the globe from the northern part of the earth to the southern part of the earth and then the water comes back again.

Due to the thermohaline circulation the water in the ocean moves from top to bottom and bottom to top.