Hi all
I found a couple of actions which you might find useful.
1: Underwater: from what I can tell it replaces the red channel and gets rid of the blue colour cast.
2: backscatter: is supposed to get rid of backscatter when you haven't used a flash.
3: resize: This one I'm not sure about it was with the others but judging by the name it resizes the image, I haven't run this one.
actions.zip