Super Mario Sunshine Glitches

Noki Bay Weirdness
On the cliff where the springboard is, there
is a small puddle that you can refill FLUDD in. If you spray the
springboard and put it just where the puddle ends, you can
fall through it and swim in the ocean that you see if you turn the
camera so that it looks behind walls. If you touch a wall while in the
ocean, you will be sucked down and lose a life.