Ship Used for navigating the overworld, for bombing Jaws (by pressing the B and A buttons for firing left or right, respectfully), and for delivering the final blow at the end.   The Receiver Exchange 5 conch shells in harbor #2 to receive this tracker. Listen to it closely, because when you're close to Jaws, it'll go beeping crazy. It doesn't make too much sense why you would need one, though, since you're able to see Jaws's dorsal fin in the water. THE RECEIVER: "It's pointlessly annoying!"   Plane Between upgrading your ship and hunting down a man-eating shark, it's good to get away every once in a while. Why not relax by bombing the ocean? During bonus stages you pilot your plane and try to hit as many jellyfish as you can. The more you get, the more shells awarded!   Submarine The coolest thing ever, after obtaining 20 shells, or getting to power level 5, the sub will appear in one of two places: either by harbor #1 (pictured in the Geography page) or at the water directly behind harbor #2. Subs shoot missiles, instead of spears, and drop bombs. They also maneuver better than the diver. When you get hit, you'll lose the sub, but it'll reappear in either of the two places from where you first got it on the map.