Air
With knuckles in Aquatic mine lower the water level as low as you can. Then look for a warning sighn. There are 2. One has goast when you go down it.NOT THE RIGHT ONE!!! Find the other one then. There will be water. Just fallow the path go up (when tou go up you will get air don't take yor time) You will get the breathing neckless or somthing and youll be able to breath under water
Note:that you do need this to beat the game!!!!
More tricks, tips and cheats for this game are right here - Sonic Adventure 2 Battle cheats
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