The turtle that was too fast for me

A turtle with brilliantly ringed scutes ducks its head from the camera.
I was too slow with the camera to catch this aquarium-bound diamondback terrapin with its head up.

Author’s note: This post has been backdated to February, when I took the photo at the National Mississippi River Museum and Aquarium in Dubuque, so I could maintain my streak of at least one post per month. So there.