I searched for the Tokina 11-16 and have found a few threads including one from Undertow with example shots, but he was using a 9.5" dome.
I will be taking quite a lot of split shots and shallow water shore diving shots.
The Tokina 10-17 is not an option because of the barrel distortion. (Digital correction softens.)
I also prefer the 11-16 over the 10-17 because I can switch to topside shots on the same trip without a second lens.
If any can point to some example photos it would be greatly appreciated 
