I CANNOT imagine being underwater, doing your thing as a scubadiver and having this face looking back at you! DANG!!!! Apparently that's what happened to an unlucky guy in Australia. The guy had his head bitten down on by a Saltwater Crocodile. It's bad enough to worry about sharks, but crocs too?! No thank you. 

I'll just stick to the swimming pool. Read the story about the unfortunate incident here.