I can see the clockwise direction but i managed to switch it to the other direction too. Some people may not be able to notice it but in fact it depends on the sight and you can see the girl spinning in both directions. How is this possible?
This pic is actually a 2-D pic coming back and forth but our brain interprets it as a 3-D image and it gives the idea of spinning in one direction. If you focus on the shadows or any other part of the image your brain might choose the opposite direction and the image will start spinning in the opposite direction. Brainsome dont you think?