Here is a very nice Scuba Dive theme template with some excellent features: 

• horizontal slide menus with one sublevel and split menus
• top secondary horizontal navigation
• fixed width 780px to fit in most modern screens and resolutions
• rounded corner boxes for user 1 and user2 module positions

This template is available for only $49.95. In fact that one low price gets you access to ALL the template shown here in the Joomlasolutions.com club!

More info at Joomlasolutions.com Template Club