I am sure many of you have seen it or have it but I recently found a very cool screensaver at www.serenescreen.com

It is very realistic and if you have a nice video card it is even better!!
You can add a bunch of fish if you buy it but the free download demo allows you to add 3 fish to try it.

Give it a look and hope you like it. Don't be affraid to drop the reg key to unlock more fish if you come across it either;)