Digimon: Digital Monsters

Season 2, Episode 16

Episode Title: 20,000 Digi-Leagues Under the Sea

Air Date: 2000-07-23

Overview:

MegaSeadramon traps the DigiDestined under an oil platform, and Cody is forced to find Joe, lying in the process. When they return, the DigiDestined find the Digi-egg of Reliability, which Cody is reluctant to accept due to lying. However, Joe convinces him to overcome his self-doubt and Cody allows Armadillomon to Armor Digivolve into Submarimon, freeing MegaSeadramon.