My girlfriend saw a movie and asked me to find it:
Is about a boy in High School that is in the swimming team as he is a very good athlete.
But one day his skin starts to become flakes with the touch of water.
Later in the movie he discovers his mother was a siren or something like that.
The movie is probably american, and around year 2000? not sure.
When Cody Griffin turns 13, things are going good. He is a star
swimmer, he is getting interest from a girl named Sam, and he has a
supportive family. Then he discovers that he may be turning into a
fish. He also discovers who his true friends are. (IMDB)