Cool stuff all round guys.
Here's some screenshots of a diving game I'm in the process of making. It's a bit bare at the moment, but the swimming engine is complete, and I've got a finished shark swimming around too.
<img src="http://www.asparagustrevor.co.uk/games/screenshots/Diver01.png">
<img src="http://www.asparagustrevor.co.uk/games/screenshots/Diver02.png">
<img src="http://www.asparagustrevor.co.uk/games/screenshots/Diver03.png">
<img src="http://www.asparagustrevor.co.uk/games/screenshots/Diver04.png">
<img src="http://www.asparagustrevor.co.uk/games/screenshots/Diver05.png">