The Thirteenth Year

1999 • 88 minutes

About this movie

As Cody Griffin approaches his 13th birthday things begin to change. Instead of growing up, Cody is growing fins! His adoptive parents try to help him look for an explanation, but he soon discovers the real reason for the unusual changes. He's the child of a mermaid and is transforming into a merboy!

Ratings and reviews

Greatest Merman Movie Ever In 1999 Disney created a movie about a 13 year old who instead of going thru normal puberty changes instead goes thru changes that turn him in a merman. When disney created this movie they created one of the nicest if not the nicest kid friendly puberty movies ever. This movie will make anyone want to be a merman or go thru the puberty cody the main star of the movie goes thru. If your looking for a great live action movie to watch after seeing the little mermaid i highly recommend you watch this movie.In short terms this is the greatest merman movie ever.

A boy born from the ocean given to married couples and make him as their own. Years later, growing up knowing about what's he's turning into

The first time I watched this movie I loved it, now its boring and I never want to watch it again......