Marley, an African penguin, looks at his reflection in a mirror equipped with a small camera at The Knoxville Zoo March 15, 2012. Holes were drilled in two mirrors to allow cameras, an iPhone 4 and a GoPro Hero 2, to record the animals as they looked at their reflections. (ADAM BRIMER/NEWS SENTINEL)
Knoxville Zoo animals react to seeing their reflection in mirrors. The mirrors had an iPhone 4 and a GoPro Hero 2 camera mounted to the back of them to capture the reactions. Photos in this gallery were made with the iPhone 4, iPhone 3Gs, GoPro Hero 2 and Nikon D3s.