These images are pretty much straight from the camera and have very minor processing - as I have better things to do with my time!
You can still see backscatter in some. I'm not working from the RAW files yet - these are all from the JPG Basic files. The reason for the highh saturation is that I am shooting in Adobe RGB III mode on the camera - which everyone comments is very close to a Velvia film emulsion in look. Shooting in sRGB would be better for showing the images straight on the web - but that is not my main goal for the shots!
Post processing is just resizing, sometimes AUTO CONTRAST and AUTO COLOUR then sharpen and save for web.
Giles is best placed to comment independantly on the colours as he is seeing the images on the LCD screen and then on my computer. But I am sure he would say that they look like this on the back of the camera. I attach a 50% crop of the fairy basslet above. Straight from the camera, just resized and save for web.
IMO most of the top photographers I know do a lot less Photoshop than people think. Its a lot easier and quicker to get it right underwater.
Alex
p.s. I would add that I do sometimes have some colour space issues on my laptop. Which can make images look a bit wierd in some browsers - although I thought I had solved them. They certainly look fine in Safari on the MAC - but IE does not read the colour profiles and can make them look a bit wierd.