At the Krusty Krab kitchen, SpongeBob daydreams of living with the jellyfish in Jellyfish Fields and is oblivious to the grill being on. He accidentally starts a fire on the grill, and a fireman runs in and turns on the hose. SpongeBob though is in the way, thus his absorbent body fills up with the water and falls on the fire, putting it out. Mr. Krabs asks SpongeBob why he was not concentrating, and SpongeBob explains that he wishes to live in the wild. He moves to Jellyfish Fields, and gives Patrick mayonnaise, old phone books, and his special jellyfishing net, "Ol' Reliable."
He even takes off everything he is wearing, except his shoes. SpongeBob tries to fit in with the jellyfish, but he just cannot get the hang of it. Meanwhile, Patrick and Sandy have a set-up picnic to try to trick SpongeBob into coming back. They eat Krabby Patties, as an attempt to bribe SpongeBob, but he resists. A crazed and heartbroken Patrick then tries to catch him with Ol' Reliable while jellyfishing, but fails when SpongeBob jumps into the jellyfish hive, where he takes to eating the jelly inside. Upon the swarm's return, SpongeBob greets them in a friendly manner, but is then repeatedly stung and chased into a cave by them. Disheartened, but not giving up yet, SpongeBob tries to sleep in a cave, using a fern as a blanket, but ultimately ends up getting covered in poison sea urchins, making him run around itching like crazy.
Finally deciding that the wild is not as good as he thought, SpongeBob returns to Bikini Bottom and, after seeing Sandy's Treedome and the Krusty Krab, realizes his mistake; he had a great life and friends, and gave it all up. Upon his return to the pineapple, he is greeted with a massive "Welcome Home" party, the others apparently having been expecting him. All is forgiven, SpongeBob puts his clothes back on as a favor to Squidward, and everyone group-hugs. However, the poison sea urchin bacteria spreads, and everyone except SpongeBob becomes itchy.
A scene showing SpongeBob being nearly naked, though his bottom was covered, was deleted due to nudity references.
This episode aired exactly two years before the September 11th terrorist attacks in the U.S.
The idea for the episode may have been based on the true story of American adventurer Christopher McCandless, who in 1990 abandoned his family and material possessions to pursue a natural, solitary life deep within the Alaskan wilderness.
Some people recall SpongeBob acting like Tarzan in a scene when the episode premiered. The mysterious scene was probably just a confusion with SpongeBob JunglePants in another Season 1 episode titled "The Paper."
When SpongeBob says "Ah, my Jellyfish brothers are returning," he was looking at the screen, meaning he could have been talking to the viewers, thus breaking the fourth wall.
This is the first time the 11 minutes is referenced. After SpongeBob leaves, Sandy says she will give him a week to come back, but Squidward says he will give him eleven minutes. This is a reference to approximately how long an average episode of this cartoon is. It could also be said that Squidward broke the fourth wall.
Squidward makes another reference to 11 minutes in the episode "Club SpongeBob" with the line "Why must every eleven minutes of my life be filled with misery?"
This also happens in "Missing Identity," when "Betty" says SpongeBob managed to kill 11 minutes.
In the episode "Planet of the Jellyfish," there was a title card that said "Eleven Minutes Later" which also breaks the fourth wall in a way.
This is the first time SpongeBob makes a bad decision, and Sandy and Patrick attempt to stop him, but he proceeds, later realizing his friends was right
The second is in "I Had an Accident," when SpongeBob gets injured and decides never to leave his house again, worried he'll get hurt again. Patrick and Sandy try to get him out, but he doesn't move until a live-action gorilla comes and attacks SpongeBob, who comes out and saves the day.
In the episode "Squid's Visit," Squidward said that he has never went to SpongeBob's house, but at the end of this episode, Squidward, Patrick, Sandy and Mr. Krabs visit SpongeBob at his house. It is most likely that this episode took place after "Squid's Visit."
In the Polish dub, the episode's title is "Naturalista" translating to "Naturalist."
In the Croatian dub, the episode name is "Povratak Prirodi" translating to "Back to the Nature."
This is the second time all of the main characters except Plankton appear
When the fire extinguisher hits the grill, the patties are shifted significantly to the left, with one floating in mid-air in front of the cabinet. This is corrected in the next scene (right before the grill bursts into flames).
The fire extinguisher disappears after the fire is put out.
The Jellyfish hive appears to be smaller on the outside and bigger on the inside.
The side view of the Krusty Krab when SpongeBob was walking to it was wrong, it was a long length version of the restaurant with the (KK) logo at the end of it, and the restaurant should have been shorter.
When SpongeBob went to his house, he appears in the back of his house instead of the front door of his house.
Sandy should not have felt the sea urchins because she is wearing her underwater suit.
Sandy's head is smaller than it usually is.
In the Latin American version of this episode, Patrick still calls Sandy, "Sandy," despite the fact that Sandy is called "Arenita" (meaning "little sand") in the Latin American version. It possibly was a mistake from the Latin American voice actor.
When the giant snail meows, the original captions said "Wow!"