Carly is a employee at Ocean Cafe and is best friends with Evie. She is often asked to do tasks and also invited David to Zac's pool party in the episode Zac's Pool Party. She seems to have a crush on David and often gets annoyed with Sirena since David seems to like her better. In season 2 however, she seems to be more tolerant of the mermaids even though she doesn't know of their secret yet, especially when Evie is accidentally turned into one. She seems to be over David by the start of season 2 being Sirena is dating him. Also, she becomes friendlier with Cam. Eventually, she starts developing romantic feelings for Cam and him vice versa. They begin to date at the end of season 2. She also finds out about the mermaids.
- She is jealous of Sirena because David likes her better.
- She is Evie's best friend
- She is portrayed by Brooke Nicole Lee
- She officially moves on from David after beginning a romantic relationship with Cam, during Season 3.