PS2 color match to remove hue?

I have been experimenting with using the Image>adjustment>match color>neutralize function in PS2 to reduce background hue, and would be interested in comments on the efficacy of this technique. I appears to me that this function produces similar results as Magic Filters, and results in images which are more like how the mind's eye see things underwater...

Attached are 2 examples of as shot and after background neutralization with PS2. The shark was shot in blue water, the wreck in green-blue water.

Comments on the effect?

The second looks great nice picture the after image editing looks great.

The shark in the first looks false like its been placed on top of the background. Great picture though where was it taken?