Look at the oceans on a map of the world and you'd be forgiven for thinking they're as static as the land. NASA's Scientific Visualization Studio, however, has produced an amazing video that shows the surface movement of the oceans between 2005 and 2007. Perpetual Ocean was rendered with flow data from the ECCO2 computational model of the seas, oceans, and ice around the world. You can see the effect of currents like the Kuroshio and Gulf Stream, along with phenomenons like the large number of whirlpools around southern Africa. There's no narration or explanatory graphics — set to a simple soundtrack, NASA's visual work speaks for itself here. Unfortunately the SIGGRAPH 2011 computer animation festival organizers didn't quite agree, as Perpetual Ocean was refused last minute entry.