Aang buys a bison whistle, which allows him to conveniently call Appa from virtually anywhere when he is in trouble.
Katara steals the Waterbending Scroll from the pirates, and her and Aang use it to start their Waterbending training.
Katara finds out that Zuko has her mother's necklace.
During Momo and the parrot-lizard's chase scene, the yellow spikes on the parrot-lizard's back are missing when it's back is to the screen.
When Katara is suggesting to Aang that they leave the pirate ship, her necklace (which is still in Zuko's possession at this point) can be faintly seen around her neck.
At one scene when everyone is being chased by the pirates, one of the pirates hair is colored in all the way. All it is is a line in the shape of where his hair should be.
When Aang is in the smoke trying to find Sokka, he's shouting for him and finally bends the smoke away before pulling it back after seeing a bunch of pirates. Look closely at Aang's mouth as he says "Uhhh, never mind I'll find you." The words don't match up to his mouth movements.
The stick Aang gives to Sokka to clean Appa was not there until Aang picked it up.
In the smoke screen made by the pirates, when Zuko ducks back to avoid the pirate captain's sword, his burnt ear is normal.
Zuko places the scroll between his belt and his back, but while he is fighting the pirate captain and his back is to the screen, the scroll is gone. When one of the pirates steals it later, the scroll is again behind Zuko.
When Zuko kicks out at the retreating pirates, Katara is not tied to the tree. However, seconds later, she is once again tied to the same tree.
Sokka: Wait a minute. Sea-loving traders with supisciously aquired merchandise, and pet reptile birds?! You guys are pirates!
Pirate Barker: We prefer to think of ourselves as high-risk traders.
Zuko: Tell me where he is, and I won't hurt you or your brother.
Katara: Go jump in the river!
Zuko: Try to understand, I need to capture him to restore something I've lost. My honor. Perhaps in exchange I can restore something you've lost.
Katara: Besides, who needs that stupid scroll anyway?
Sokka: Is that really how you feel? (Sokka shows the Waterbending scroll but doesn't give it to her)
Katara: The scroll!
Sokka: First, what did you learn?
Katara: Stealing is wrong. (After she gets it) Unless it's from pirates!
Aang: Good one, Katara.
Sokka: Well let's see. You've pretty much mastered airbending and that only took you 112 years? I'm sure you can master three more elements by next summer.
Aang: I haven't even started waterbending and we're still weeks away from the North Pole! What am I gonna do?!
Pirate: I hope that lemur of yours has nine lives!
Prince Zuko: (to his ship captain) What's the meaning of this mutiny?! No one told you to change course!
Iroh: Actually, someone did. I assure you it is a matter of utmost importance, Prince Zuko.
Prince Zuko: Is it something to do with the Avatar?
Iroh: Even more urgent. It seems I've lost my lotus tile.
Prince Zuko: Lotus tile?
Iroh: For my Pai Sho game. Most people think the lotus tile insignificant, but it is essential for the unusual strategy that I employ.
Prince Zuko: You changed our course for a stupid lotus tile?!
Iroh: See, you, like most people, underestimate it's value.
Sokka (sees Aang pacing): Would you sit down?! If we hit a bump, you'll go flying off! What's bugging you, anyways?
Aang: It's what Avatar Roku said. I'm supposed to master all four elements before that comet arrives!
(Katara teaching Aang some waterbending moves)
Katara: This is a more difficult move. I call it streaming the water. (begins streaming the water) It's harder than it looks so don't be disappointed if ... (looks at Aang streaming the water and doing fancy moves with it) Nice work, though the over the head flare was unnecessary. (gives Aang a jealous look)
Katara: I'm so sorry, Aang, I don't know what's gotten into me.
Sokka: Hey, what about Momo? He's the real victim here.
Katara: I'm sorry, too, Momo.
Sokka: And me? I had-
Katara: no more apologies!
(After Katara stole the Waterbending scroll from the pirates)
Sokka: No wonder they were trying to hack us up. You stole their waterbending scroll!
Katara: I prefer to think of it as high-risk trading.
Aang: Good one, Katara.
(After Sokka sweet-talks the pirates by revealing that Aang is the Avatar)
Zuko: Shut your mouth, you water tribe peasant!
Aang: Yeah, Sokka, you really should shut your mouth.
Cabbage Merchant: My cabbages! Oooohhh... This place is worse than Omashu!
(during the battle with the pirates)
Aang (to Katara): Hey! You did the Water Whip!
Katara: I couldn't have done it without your help!
Sokka (trapped by 2 pirates): Will you two quit congratulating each other and help me out!!
Pirate Captain: Shouldn't we stop to search the woods?
Prince Zuko: We don't need to stop. They stole a waterbending scroll, right?
Pirate Captain: Uh huh.
Prince Zuko: Then they'll be on the water.
Uncle Iroh: Just give me ten minutes to check the merchants at this port of call. Hopefully they'll have the lotus tile in stock and I can get on with my life!
(Zuko breathes fire)
Uncle Iroh: I'm lucky to have such an understanding nephew.
Sokka: So, while you guys are playing in the water, I'm supposed to be hard at work picking the mud out of a giant bison's feet?
Aang: Mud and bugs!
Sokka (long pause): Okay.
Katara: Aang, this is all my fault.
Aang: No, Katara, it isn't.
Uncle Iroh: Yeah, it kind of is.
Pirate Barker (to Aang): Oh! You there! I can see by your clothing that you're world traveling types. Perhaps I can interest you in some exotic curios?
Aang: Sure! What are curios?
Pirate Barker: I'm not entirely sure, but we've got'em!
Katara: My mother's necklace! Where did you get that?
Prince Zuko: I didn't steal it, if that's what you're wondering. Tell me where he is.
Prince Zuko: It's good to know this trip was a complete waste of time for everyone!
Uncle Iroh: Are you so busy fighting you cannot see your own ship has set sail?
Prince Zuko We have no time for your proverbs, Uncle!
Uncle Iroh: It's no proverb! (points to ship sailing down the river)
Prince Zuko: (about to burn the Waterbending Scroll) I wonder how much money this is worth?
(the pirates gasp in fear)
Prince Zuko: A lot, apparently.
(Aang Gets Caught in a Net by the Pirates)
Sokka: Oh, I'm not good enough to kidnap?
(Another Net Catches Sokka)
Prince Zuko: You will regret breaking a deal with me!
Uncle Iroh: Hehe, Prince Zuko, you're really going to get a kick out of this. The missing lotus tile was in my sleeve the whole time!
Prince Zuko (Enraged, He throws the Lotus Tile into river and hits a pirate on the head)
Katara: Shoot! Come on water, work with me here!
(Katara hears noise; looks behind some bushes and sees a ship; she then backs up right into a pirate's grasp)
Katara (to pirate): No, let go of me! (water whips him and runs away, right into Prince Zuko's arms)
Prince Zuko (to Katara): I'll save you from the pirates.
Uncle Iroh (amazed by the ruby-eyed monkey statue): Oh! That is handsome! Wouldn't it look magnificent in the galley?
Many of the waterbending movements come from the martial arts style Tai Chi.
Also, in Tai Chi, stances are very important just like how Aang told Katara to shift her weight through her stances. Some of the stances in the move Katara was trying to learn are the same stances in Tai Chi forms such as the Bow and Sit Stance and the Ding Bow Stances.
The sequence in which Momo is chased by the Reptile bird is taken from a similar sequence that occurred between Momo and a pet Dragon hawk in the unaired pilot episode.
When Zuko threatens to burn the waterbending scroll, it draws air to when Elizabeth Swann threatens to drop the medallion over the edge of the ship in Pirates of the Caribbean: Curse of The Black Pearl. The intial exchange of dialog between Zuko and Katara regarding her necklace also quotes from Elizabeth and the pirates. Also, Katara tells Momo she owes him "a whole bushel of apples," another line from Pirates (where the pirate captain promises to "eat a whole bushel of apples," when he is free of his curse).
The parrot that the Captain owned had a striking resemblance to an Archaeopteryx. The Archaeopteryx was one of the earliest primitive birds, existing almost 145 million years ago. Its feathers resembled those of modern birds but it also had jaws lined with sharp teeth, three or four fingers ending in curved claws, and a long bony tail. To put simply, it looked more like a feathered dinosaur or a reptile bird.