PGM Sea Hunter

Take out sharks with harpoons, but you have a limited number, so don't waste your shots. Oh, and don't let the timer expire either and don't hit the scuba diver.

INSTRUCTIONS:
You have 20 harpoons max and earn 10 more when advancing levels and 5 more if you hit a treasure chest. Hit a scuba diver and lose 1 harpoon.  If shark that comes at you reaches you or game timer runs out, it's game over.