Shark bait

John just sent me a picture of a Great White shark following a canoeist. Great picture if it's real, I said. The trouble with so many Photoshop images today is that it's hard to tell what is real and what has been doctored. Then he sent me the full magazine article so see for yourself. Would you test the benign tendencies of a Great White in your little canoe? Personally I would have been paddling fast enough to take off.

There's some interesting examples of picture doctoring alongside some genuine photographs here at Snopes.com.