The lagoon board needs work. Perhaps that's the set up for the entire game to start from the very beginning, but I found the controls on the Lagoon board to be a bit sluggish...even though we're underwater, the point is that the enemies move faster than you do. I've always disliked that sort of aspect. Never made sense. But I suppose that's the challenge.
Anyway good job. It's a very nice time waster.