Here's a link to a basic geographical search. Just click on the area where you think the turtles orginated. This is fairly basic. I could probably ID the turtle in just a few minutes if you posted a pic.

link- http://www.chelonia.org/bygeography.htm

picture posting instructions - go to photo gallery up top, above the red gallery sign click log in, in same location click upload photos, upload the photos (you may need to downsize them), when you post a message a list of your photos will be at the bottom of the screen for you to choose from.