Well from what I can see he is a pretty funny and cool guy, but apart from that the question you're asking is too broad to answer, why is anybody anybodies best friend.
I think it's very rare for a diver to be attacked by a shark, as it's rapid movement that they instinctively see as prey, at least that is what I remember reading once. But other than that I don't know what special precautions they take. Google it.
I'm hoping for a similar start to the one we had against Arsenal 2009/10 season, Arsenal were so overwhelmed. Real Madrid absolutely outclassed City last season, we could do the same if we start strongly.