A shy turtle (or more likely, a terrified one). This photo was taken during a hike in Mark Twain national forest (Missouri), May 2017. I spent about 5-7 minutes waiting for it to make a significant move, but all it did was peeking at me, likely waiting for me to go. I used a prime 20mm lens on an Olympus 4/3 camera, so I had to keep the camera in less than half meter from the turtle to get this picture.