At the Title screen, hold L1 + R1 and press Left, Circle, Up, Right, Circle, Left, Left.
At the Title screen, hold L1 + R1 and press Left, Circle, Up, Down, Circle, Left, Down, Circle, X.
Unlock All Beaches
At the Title Screen, hold R1 + L1, and press Down, Up, Left, Left, Down, Circle, Circle, Right. This will unlock all of the beaches
At the start menu where it says press start hold L1 and R1 and input, down, circle, circle, down, right, circle, x.