Wetpixel member Jeremy Payne posts a link to his technique for color correcting underwater images exposed with too little strobe light.
Here’s a method that can often return significant natural-looking color to your underwater images that have that blue/green cast. This technique works best with images without a lot of water column and lots of colorful stuff. I’m using Photoshop CS3 for this tutorial, but most of the effects are easy to replicate in other editors.
Jeremy was kind enough to take one of my pictures I had posted, and color correct it with instructions. While they were not as detailed as his tutorial, the fact remains I was able to get some really great color back into my shots with minimal effort. Now I have some more details as to how it was done and I look forward to fixing up some more of my pictures!