Immune to Damage:
At the controller help screen, hold L1 and press X, Circle, X, Left, Left, Square, R1, Down, Square, Square.
Turn Pearls into King Fish Coins:
At the controller help screen, hold L1 and press Circle, X, Circle, Circle, Circle, X, Circle, Circle.
Two Extra Clams and Fame:
At the controller help screen, hold L1 and press Circle, Circle, X, X, Circle, X, Circle, Circle.