Humans shed skin cells all of the time—according to one source, in one year, each of us sheds more than 8 pounds (3.6 kg) of dead skin. Snakes have an entirely different shedding process. Several times a year they grow a complete new layer of skin underneath the old layer. During shedding, snakes secrete a fluid to help separate the old skin from the new, and this fluid runs under their specialized eye caps, resulting in the opaque or blue quality of the eye.
Last Friday I encountered one of these blue-eyed snakes while exploring Occoquan Bay National Wildlife Refuge. Snakes are vulnerable during this stage when their vision is impaired and I was a little surprised to see this snake was in a fairly open area. I think this may be an Eastern Ratsnake (Pantherophis alleghaniensis), but did not examine the snake at length for fear of disturbing it.
Moving as stealthily as I could, I leaned in with my macro lens to capture this image. If you look carefully into the eye (or double-click on the image to enlarge it) you will see that I managed to capture a “selfie” reflection.
As an interesting coincidence, my most viewed posting of 2020 has been a May 2016 posting that also featured a snake with a blue eye. That posting, entitled Blue-eyed garter snake, has had 597 views so far this year. If you are not totally creeped out by today’s photo, you might want to check out the 2016 posting, which has some full body shots as well as a close-up shot of the snake’s head.
© Michael Q. Powell. All rights reserved.
Mike Powell 