Peeling an orange...:
There are times when you don't have a clue when a photo opportunity will present itself. I was just having an orange for lunch. When I started peeling it, I noticed the blade of the knife showing thru the orange navel, light coming from above, shining on the blade, the valley of the navel presenting shadows at a minuscule scale, light playing everywhere... I stopped, mid-cut, and grabbed the camera. I had to take that one...

By the way, the orange was delicious!