Graphics: Okay
Sound: Okay
Mechanics: Poor
Originality: Almost none
I don't want to be that guy, but my grading criteria tends to be a lot more strict when a game is trying to emulate another successful game. Graphics and sound are window dressing for me and don't factor a whole lot if the gameplay is fun, but that isn't happening in this game. You launch the shark, flop around for a few seconds, maybe hit a boat or two, and then die when you hit the water (which makes no sense). If you had wanted to save the game, adding an upgrade system like a lot of catapult games would have been a considerable improvement.
Not trying to knock your efforts, you did put time and energy into this. But if you are riding the coat-tails of someone else, you have to be making a GOOD knock-off.