Catch all the flying jellyfish around him with the net. The Giant Jellyfish will then go up to the top of the screen and fire electricity down. To hurt him, use the blow the bubble up to hit him. Repeat this until it is defeated.
Level Select
Enter 9??92? as a password to unlock all levels, have 8 underwear icons, and 100% Dubloons in all levels.
Enter ???91? as a password to unlock all levels under the easy difficulty setting.
Enter ???92? as a password to unlock all levels under the hard difficulty setting, all underwear icons, and 100% Dubloons in all levels.
Alternately, enter 22999? as a password.
Alternately, enter ???9?? as a password.
Enter BBB345 as a password to unlock the following levels: Gary Come Home, Jellyfish Jam, Coral Of The Story, It's A Jungle Out There, Clambake, Under The Boardwalk, and Special Delivery.
Password
Input 889912 as your password for the last level.
Walk In The Air
This trick requires Karate Gloves and Bounce Bubbles. Make a Bounce Bubble and jump on the bubble. Move in the air and use the Karate Glove. If done correctly Spongebob have a little walk in the air.