Littlefoot befriends with a mysterious, fun-loving dolphin-like creature named Mo, who is trapped in "new water" caused by heavy rain. The gang then goes on an adventure to the "big water" to bring Mo home.
Unfortunately the movie The Land Before Time IX: Journey to Big Water is not yet available on Disney Plus.
| Production | Susan Blu | Casting |
| Production | Charles Grosvenor | Producer |
| Sound | Michael Tavera | Original Music Composer |
| Writing | Judy Freudberg | Characters |
| Art | Flamarion Ferreira | Art Direction |
| Directing | Charles Grosvenor | Director |
| Editing | Jay Bixsen | Editor |
| Writing | Tony Geiss | Characters |
| Production | Daniel J. Wiley | Associate Producer |
| Production | James Wang | Executive Producer |
| Production | Steve Chen | Supervising Producer |
| Art | Micki Zurcher | Background Designer |
| Sound | Michele Brourman | Songs |
| Sound | Amanda McBroom | Songs |
| Writing | Dev Ross | Writer |
