You are Bulishor, a wondering little air bubble, lost in the deepest waters of an ocean. You have decided to go to see your mother, who lives in a place called Air, located at the surface of the water.
On your way to the surface, you have to face with different creatures around you, being cautious and wise. You must shoot the piranha. But the piranha are protected by the shark. How many piranhas can you shoot?
