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.
| Sound | Michael Tavera | Original Music Composer |
| Writing | Tony Geiss | Characters |
| Directing | Charles Grosvenor | Director |
| Production | Susan Blu | Casting |
| Art | Flamarion Ferreira | Art Direction |
| Editing | Jay Bixsen | Editor |
| Writing | Judy Freudberg | Characters |
| Production | Charles Grosvenor | Producer |
| Production | Daniel J. Wiley | Associate Producer |
| Production | Steve Chen | Supervising Producer |
| Production | James Wang | Executive Producer |
| Art | Micki Zurcher | Background Designer |
| Sound | Amanda McBroom | Songs |
| Sound | Michele Brourman | Songs |
| Writing | Dev Ross | Writer |
