One of the 11 entries in the
Under Water Challenge was a GFX9000 demo created by
Team Bomba. As of now you can download an updated version
right here. This version enables R800 mode on turboR, to increase image decompression-speed. Also, a nice credits screen was added to the demo. Of course the original version of the demo will be rated by the jury of the Under Water Challenge.
Relevant link:
Team Bomba Under Water