The shark is huge too, like probably the size of a school bus. I think that just makes it that much more fun to want to play. At about the two minute mark, this shark just jumps onto a boat with no hesitation, tail whips a person into the shadow realm, then jumps onto another boat 20 feet away like it was Batman... the realism in this game is amazing and terrifying.
Also, as an open world RPG, I think you could choose to be a good shark or a bad one. Always killing people (for example) has its negatives in that people start to hunt you (not that you can just take them out in huge numbers), but I'm sure they'd eventually get you. I also love that there's a meter that measures how much you are actually terrifying the local population. Yet, even at its highest setting, I bet there are people that still go for a swim.
It just wouldn't be fun otherwise.
How about any of you reading this post? Ever have a desire to be a shark?