The Great Undersea Adventure! Search for the Treasure Digimon of Dreams!

Synopsis
Tagiru and company are enjoying a day of fishing at the beach when a Digimon Hunter, Mizuki, and her partner, Submarimon, appear. Mizuki, also a treasure hunter, tells them of a sunken treasure in a cave in DigiQuartz that she can't reach because it's guarded by an evil Digimon called Dagomon. She asks Tagiru and the others to Hunt Dagomon for her, so they follow her to the undersea cave, where they find much more than just Dagomon...

Digivolutions
(Number indicates order of occurrence.)