I have created an online field guide to help Bangkok residents (and others in Southeast Asia) identify and appreciate their herp species. It is completely nonprofit, of course. You can view it at bangkokherps.wordpress.com.
I would like to use some of your water snake photos in my species description. Would it be possible for me to use your photographs of the species on the site? Of course, you would be acknowledged in the caption and watermarked on the photo itself in any way you desire.