I knew Nemo had begun to hibernate when I posted an earlier photo of him in this igloo. He was close to the doorway and his feet could be seen stretched behind him. Now that I know this is his chosen hibernation place, you can see he is deep inside his well-guarded (see hippo and dinosaur) spot. I believe that is the bottom of his foot. The camera flash makes it appear closer. (Turtles may appear closer than they are.)