In this paper, given at CESCG in May 2005, Aranha describes the challenges of modeling underwater scenes and generating accurate computer graphics of underwater environments. Since water is approximately 800 times denser than air, light acts differently and new rendering approaches are needed. He describes a system built to help overcome these limitations and generate more accurate simulations (and particularly lighting) of underwater spaces.
M. Aranha, Realistic Underwater Visualisation. CESCG, May 2005.