Photoshop guru, Daniel Brown, will be releasing an instructional series later this year aimed at underwater photographers. I had the privelege of testing and commenting on a Photoshop action designed to help remove backscatter. The following link is to
Dan's Backscatter Action and Video Tutorial and has been posted with Daniel's permission. It really works! If it does not completely solve your backscatter problem there is a tweak that may help. Send me a private message, please do not post your questions or comments in this thread.
---Bob