Hey,
I've got to the second level and am a bit clueless. I think it might be good to have an exit button when playing through a level, to go back to the main menu and resume after. When I first tried it, I had to exit the app completely a few times to go back to the instructions and figure out what do to.
Also maybe some more hints would be helpful.
The sea animation is funky, eventhough i see its not being rendered real time.