New to Terragen Sky, but first thing I noticed when opening the program, is that even after the default scene has finished rendering, it maintains 95% CPU usage continuously....is this a bug?
No problem. You'd have to work on it, as it's a test on one layer. If you want transparency at front, you'd have to put this on a lake or sphere object, and do the shoreline differently. The main trick is to use a distance shader to eliminate reflection in the distance, and give the water a faked reflection by just color. Best to smooth waves in distance too.
Interesting to see that AI can even do an animation like that.