This game is very well done. You were able to combine a lot of elements in a short time. My only complaint is that the dive/jump mechanic is a bit confusing. I would have liked to have an extra button that allows me to start with the jump instead of having to dive down before I'm able to jump.
But, I certainly can't complain about the rest of the game. Getting sound, menus, death sequences and restart sequences set up can be a nightmare, and you did all of those flawlessly! I love how the shark laughs at the player on death.