Acutually, I thought of the name NohFohToh after a trip to Italy with my late husband. We were in the Doge's Palace in Venice trying to sneak in some photographs and the guide followed us around screaming "NO PHOTO!" I just kind of changed the spelling around to make it more fun. A Japanese theater experience. 
To tell you the truth, I really don't know if the shark was backpedaling (I didn't even know if they could do that) but after I snapped this, he made a pretty close pass to my left and I got a photo of his eyeball. It's a little blurry, but what the heck. 
Robin, I thought I posted an announcement here about the trip. At first, the boat wasn't going to go unless it had a minimum of 10. Then it filled up. I didn't know anyone on the trip except one other person.