It is a small candy bar that has a red wrapper with a light blue banner on it. It has the word "kelp" written in the center in light/electric blue text. When it is seen from afar, the text reads "goo" instead of "kelp."
The candy bar itself appears to be in a deep grayish-green color.
Role in series
After waiting for the bus to get from Rock Bottom back to Bikini Bottom, SpongeBob eventually gets hungry. He first eats glove candy from his candy glove dispenser he got from Glove World!, but he spits them out due to their disgusting flavor.
He then notices the snack machine from across the street and goes toward it to get some candy, but every time he does so, the bus leaves. SpongeBob eventually tries to trick the bus by not getting the candy bar, but fails, and one of the local Rock Bottomites takes SpongeBob's Kelp Nougat Crunch bar.
Operation Krabby Patty
Kelp Nougat Crunch bars appear as collectibles throughout various levels.