On the level on which you have to save the creche of
turtles, go to the chef. Charge into the water without
the chef game starting. When in the water, swim to the
surface and edge. The game will 'pull' you back to the
chef (as if you had lost the chef game). You should now
be 'swimming' in the air!! You can fly-swim anywhere on
the level, but if you touch thewater, you will lose the
swim-fly cheat. This effect ends when you leave the level.