Water

This shows a water shader. It's REALLY far from perfect because shaders v2.0 are extremely limited and I can't figure out an easy way to implement all I really need for a nice water.
You can dive underwater though, it's quite nice when the sun is moving around. ^_^

Use Alt+Mouse to manipulate the camera using MAYA mode.  
Use Alt+Shift+Mouse to manipulate the camera using UnrealEd mode (i.e. first person).
If you are under Linux and can't use the Alt key, push that button so everything works without Alt.

Time of Day [0,24]   -   Turbidity [2,oo[
Absorption x1000 [0,oo[   -   Scattering x1000 [0,oo[   -   Scattering anisotropy [-1,+1]   -   Water Color