When Jaws (The Great White) has attacked your boat and you are swimming in the water fighting him, go to the water's surface. Jaws will not touch or harm you. This, however, will not save you from the stingrays, jellyfish, or other smaller sharks.

You can also go just a little bit lower. You can still attack him and he cannot get to you.

 

 

 

On Player 2's controller, hold Up, Left, and B, then reset the console. Continue along into the game. When you play, pause the game, and unpause while holding a button for a certain effect, as below.
 

          Effect           Code

 

On Player 2's controller, hold Up, Left, and B, then reset the console to find a sound test at the title screen.