AG021

Which Wurmple's Which? (Japanese: ケムッソVSケムッソ！どっちがどっち！？ VS Kemusso! Which is Which!?) is the 21st episode of Pokémon the Series: Ruby and Sapphire, and the 295th episode of the Pokémon animated series. It was first broadcast in Japan on April 17, 2003, and in the United States on February 14, 2004. 
==Blurb==
Everyone is getting up and getting ready for breakfast, but Ash is nowhere in sight. He is found outside the Pokémon Center, anxiously awaiting news on his Treecko. After breakfast, Ash and company head out to Granite Cave because they heard one of the elite Trainers is there. On their way, they pass an old man who says that this is the ultimate fishing spot where rare and unusual water Pokémon can be caught. The man then offers them some fishing poles to find out for themselves. What our heroes aren't aware of is that the old man is actually James and the other two Team Rocket hooligans are hiding in the bushes. After some time, May catches an Octillery. She tries to battle it with her Wurmple, but fails and the Octillery jumps back into the water. Ash has the same luck with the Corphish he caught.
Throughout all this, Team Rocket is hiding in the water in their Magikarp sub, waiting for someone to snag their sub so that they can pull everyone, Poké Balls and all, into the water. May is the unlucky candidate, but instead of Team Rocket pulling her down, Ash, Max, Brock, and May pull them up and out of the water. After reciting their motto, Team Rocket jumps onto the shore and tries to steal all the Pokémon. When May defends her Wurmple, Jessie says she doesn't want May's Wurmple because Jessie's is better. A fight between the girls ensues over which one is better. Max concludes that the Wurmples are about the same. James tries to steal the Pokémon again and in the resulting confusion, the Wurmples get mixed up. Later, May realizes what happened when her Wurmple won't go back into its ball. Ash's Taillow helps the gang find Team Rocket to make the trade. When May and Jessie move to trade back, Jessie takes both Wurmples and tries to escape in Team Rocket's balloon. Ash sends Taillow to pop the balloon and a Pokémon battle results. The episode ends with May happily feeding her Wurmple.
==Plot==
At the Dewford Island Pokémon Center, is the first to wake up, and she quickly alerts Max and to 's odd disappearance. The trio soon locates Ash and sleeping on a hallway bench, and Ash explains that he simply wanted to be closer to and while they recover. After receiving his fully healed from Nurse Joy, the group eat breakfast and discuss Ash's . Max approaches the others and informs them that , the son of Mr. Stone, is in Granite Cave doing research and trying to find some rare stones. Ash and decide to meet him there.
On the way to Granite Cave, they come across James, disguised as an old man. He convinces them to fish at a nearby fishing spot, and lends them some rods. Ash is set on getting some training in, but Brock reminds him of Brawly’s advice; even play can be training. As the group starts fishing, Ash lets Treecko out to enjoy the sunshine. Max tries to instruct his older sister how to fish, but May retorts that she is the older one. After fishing for a moment, May lands an . She looks it up in her Pokédex as explains that she needs to battle the hooked Pokémon. Behind them, the wild Octillery suctions itself onto Max’s head. May sends out her and commands it to use , but Octillery dodges. Wurmple mistakenly ensnares Max with the attack instead. Octillery escapes back into the sea, taking the time to headbutt Max on the way. Next, Ash lands a , which grabs Max using . Pikachu tries to use a , but Corphish quickly attacks with before returning to the water.
Meanwhile, is back inside their Magikarp submarine. Jessie isn't too thrilled that the random fishing spot is helping the twerps land several catches. She goes onto explain the next plan of attack: Team Rocket intends to snare the group's rods and pull them into the water, then steal their floating s, along with an exhausted Pikachu. May soon feels something on her line, and the others lend their strengths. The combined effort causes Team Rocket's pedals to break allowing the group to pull the sub to the surface. Team Rocket exits their submarine while reciting their , before trying to capture Pikachu in a shock-proof net. Ash commands Treecko to use on James, who drops the net. , claws extended, threatens to steal all of the twerps' Pokémon. May quickly defends her Wurmple, which results in an argument unfolding with Jessie over whose Wurmple is superior. Max tries to settle the debate, so he measures and closely examines the two Wurmple and comes to the conclusion that they are both equal. Jessie doesn't agree with the verdict and decides a battle is in order. She commands her to use , but it misses. May has her Wurmple use String Shot, and the silky threads hit Jessie. James tries to cast the net once again, but Treecko spits its twig at him. May and Ash command Treecko and Wurmple to fight, and during the confusion the two Wurmple are unknowingly swapped. Jessie carries the injured Wurmple and Meowth under her arms as Team Rocket tries to flee, but they are blasted away by Pikachu's .
Afterwards, May notices that the Wurmple isn't hungry, and is beginning to sense something is wrong. She follows Brock's suggestion and tries to recall Wurmple back to its Poké Ball, but it doesn't return as expected. The group figures out that the two Worm Pokémon must have been switched. Meanwhile, Team Rocket is dismayed to find that the Wurmple near them has a ferocious appetite, and doesn't seem to like Jessie. The group hunts for Team Rocket, using to scout the area. Both May and Jessie reminisce about capturing their respective Wurmple, but Jessie's reminiscence is cut short by the arrival of Ash and his friends. May reveals the truth about the swap, and Jessie agrees to give both Wurmple to their correct . However, Jessie double-crosses May, stealing both Wurmple and running away. Team Rocket jumps in their Meowth balloon while fantasizing about giving the Wurmple to their . Taillow interrupts their boss fantasy, and deflates their balloon with a quick . May recovers her beloved Wurmple, but Jessie sends out to .
Taillow tries to use Quick Attack, but Seviper's quickly stops it. Ash sends out Treecko to use on Seviper and James counters by sending out his , but it hugs him instead. Ash sends Pikachu next, but Team Rocket isn't finished yet. Cacnea uses while Seviper uses . Treecko and Pikachu dodge the attacks and they use Pound and Quick Attack to finish off Seviper and Cacnea. Pikachu sends Team Rocket flying with a final Thunderbolt. While James and the others aren't thrilled about another blast off, Jessie is just glad to be reunited with her darling Wurmple again. May is equally as happy, and offers Wurmple a bowl of food, which it quickly polishes off before falling asleep. Max and the others remark that May is becoming quite the Trainer. May replies that her growing confidence is all thanks to Wurmple.
==Major events==
* tries to an and tries to catch a , but both fail.
* Jessie's Wurmple is revealed to know .
===Debuts===
====Pokémon debuts====
* 
==Characters==
===Humans===
* 
* 
* 
* Max
* Jessie
* James
* Nurse Joy
* (fantasy)
===Pokémon===
Who's That Pokémon?: 
* ()
* ()
* ()
* ()
* ()
* ()
* ()
* ()
* ()
* ()
* (debut)
* 
==Trivia==
* Mike Pollock takes over the role of the narrator in the English dub and remains in this role until Pasta La Vista.
* In the English dub, this is the first time that 's father is referred to as "Mr. Stone". However in his only anime appearance, he was referred to as "Mr. President".
* Face Forward Team Rocket! plays in the background of this episode.
===Errors===
* 's lower claws are red instead of beige during its attacks on Max and . 
* When turning to agree with , and Max duplicate.
* After defeating , 's mouth moves but makes no sound.
* In the dub, is incorrectly translated as Cabeçada de Caranguejo, which means "Crab Headbutt", instead of the usual Martelo Caranguejo, a name used since the original series.
AG021 Error.png|Corphish's miscolored claws
AG021 error 2.png|The duplication error
===Dub edits===
==In other languages==
021
Category:Episodes written by Yukiyoshi Ōhashi
Category:Episodes storyboarded by Yoshitaka Fujimoto
Category:Episodes directed by Shigeru Ōmachi
Category:Episodes animated by Yūsaku Takeda
Category:Episodes focusing on May 
Category:Episodes focusing on Jessie
de:Vertauschte Waumpel
es:EP297
fr:AG021
it:RZ021
ja:AG編第21話
zh:宝可梦 超世代 第21集