Sim AQUARIUM Screensaver - Version 2.0 Through the shimmering and waving surface, light beams travel down placing dancing lights on corals and fish. Between the colourful and swaying corals various fish rule the scene. At the edge of the gravel area two Giant Clams bathing in light, slowly open and close. SimAQUARIUM 2 screensaver brings the most realistic and wonderful reef aquarium to your computer screen!