Lots of Lives easily
There are 3 places to get 1up mushrooms in delfino:
1.under water in between the pinna park cannon and that bridge the boat goes under.
2.the little island straight ahead of the pinna park cannon. Just squirt the smoking pile of logs and a mushroom will come out.
3.down near the guy that gives you glasses, just walk around near him and you'll see a circle apear (thats a underground tunnel) ground pound on it and go through and there will be a mushroom.
Now to keep getting more you need to go in any area (ex.pianta village, ricco harbour) and when you get in go to exit area and find the mushrooms again and do the same thing. Keep doing that until you desire.
More tricks, tips and cheats for this game are right here - Super Mario Sunshine cheats
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