A concatanated video made of animations produced by NASA's Scientific Visualization Studio. Animations include the "Perpetual Ocean" showing ocean surface currents measured between July 2005 and December 2007.
Thermohaline animation shows another feature of the global ocean circulation: the Antarctic Circumpolar Current. The region around latitude 60 south is the only part of the Earth where the ocean can flow all the way around the world with no obstruction by land. As a result, both the surface and deep waters flow from west to east around Antarctica. This circumpolar motion links the world's oceans and allows the deep water circulation from the Atlantic to rise in the Indian and Pacific Oceans, thereby closing the surface circulation with the northward flow in the Atlantic.
You can learn more on naturedocumentaries.org