- HD 1080
- Runtime: 95m.
- Status: Released
0
- Languages: en
- Country: United States of America
- Director: Duwayne Dunham
- Stars: Chez Starbuck, Justin Jon Ross, Courtnee Draper, Dave Coulier, Kristen Stewart
- keywords: parent child relationship, birthday, fishing, mermaid, adopted
- Production_studio: Dream City Films, Mike Jacobs Jr. Productions, Walt Disney Television, Utica Productions
- Slogan: Cody's Not Just Growing Up... He's Growing Fins!
- providers: Disney Plus
- The The Thirteenth Year is featured in the top rankings of 1999
- #64 in Top Comedy Movies of 1999
- #3 in Top Family Movies of 1999
- #15 in Top Adventure Movies of 1999
A teen learns that his birth mother is a mermaid after he begins to grow fins and slimy scales on his thirteenth birthday.