20,000 Digi-Leagues Under the Sea

The group become trapped under an offshore oil platform, and all hope for a swift rescue lies with Cody as he's sent off in the only escape pod.

thumb|225px|left|Episode recap for 20,000 Digi-Leagues Under the Sea.

Synopsis
Searching for a new Digi-Egg Mega Seadramon traps the kids under an oil platform under the sea. Forced to secure the area to stop the area from flooding, they have a small air supply. The kids choose Cody to go for help in an emergency pod, knowing he needed to face his fear of water. Cody goes get Joe in the real world but has to lie to get him out of class. Meanwhile in the oil platform, the other kids find the Digi-Egg of Reliability and tells Cody to take it when comes to the rescue. Cody hesitates because he doesn’t think he is reliable. But Joe explains to him why he is. He takes it and Armadilliomon armor digivolves to Subarimon and with Ikkakumon, they defeat Mega Seadramon.

Animation errors

 * there's a split second in which davis is holding T.K's D-3, and in the end of the episode for an split second kari's D-3 colors are inversed, looking surprisingly similar to what it will look like when used for DNA Digivolution.

Dubbing changes

 * In the Japanese version, Cody did not have a fear of water. Instead, he was blaming himself for leading his friends down under the oil platform.

Real-world references

 * The title of the episode is an obvious reference to the Jules Verne novel Twenty Thousand Leagues Under the Sea.

Miscellaneous trivia

 * Just like the Digi-Egg of Reliability, Joe's Crest of Reliability activated during a battle with MegaSeadramon, back in the Digimon Adventure episode entitled City Under Siege.
 * The Digimon that Davis imagines as Armadillomon's new Armor digivolution looks surprisingly similar to Armadillomon's Champion level, Ankylomon.
 * Submarimon announces the episode title in the Japanese episode.