In Carnivorous Canyons, Mr. Krabs gives you a launch machine. Use this to defeat the Pufferfishes. Do this by turning on the launch machine, press R to suck in release. Keep holding R. Then, when ready, release R to stop the release. This will destroy the Pufferfish.
Easy Final Boss Battle
When you battle the final boss, stick to the far left side of the screen. The boss can't harm you there. Just keep jumping and attacking to win the fight with ease.
Fish Hooks Park: Avoid hole
In the beginning of Fish Hooks Park, there is a rock formation followed by a big hole. To avoid this hole, jump onto the hooks above. They stay there for approximately five seconds. You have to jump off before then.
Jelly Fields: Get past Giant Jellyfish
In the introduction to Jelly Fields, Squidward mentions catching Jellyfish with a net. The Jellyfish look like bowties. This is the way to get past the Giant Jellyfish in Downtown Bikini Bottom.
In Sandy's Tree Dome, there is a twenty second time limit. To prevent this, jump down from the branch below the last springboard. This gives you a water helmet. It takes away that time limit.
Carnivorous Canyons...