is a screensaver for Mac OS X. But, Fluid isn't just any screensaver. It is a realtime fluid-dynamics model that renders to your screen using wave velocity color-coding and reflections on the surface of the waves. Fluid also has its own particle engine so that it can visualize particles within the liquid medium. Add to that the ability to show the streaklines of the currents and you've got yourself one really intense screensaver.
In fact, Fluid is every bit as powerful of a visualization system as most of the high-end ocean model visualization programs that we have worked on in the past. If it's good enough for the U.S. Navy, it's probably cool enough for your screensaver.