This animation nicely highlights the energetic turbulent ocean surface currents that are present in the real ocean but are not directly visible to the eye. Numerous people have also remarked that the visualization evokes the Starry Night by Vincent van Gogh.
There are several similar animations by NASA's van Gogh team (Greg Shirah and Horace Mitchell) at http://svs.gsfc.nasa.gov/vis/a000000/a003800/a003827/.
Ocean surface currents from the MIT/NASA-JPL ECCO2 collaboration and visualized by the NASA Goddard Scientific Visualization Studio.
MITgcm (the MIT General Circulation Model) is a numerical model developed by MIT ocean modelers (and free for anyone to download and play with) that finds wide use within the oceanographic modeling community worldwide.