13 October 2017
Barbie and her sisters take off on another exciting, global adventure to visit their friend Ken at his summer internship at a beautiful and exotic coral reef. While exploring the wonders of the reef, Barbie and her sisters also discover the rare and spectacular gemstone dolphins that live there. Isla, a mysterious and charismatic girl with a very special connection to the dolphins, befriends Barbie and then reveals that she is actually a magical mermaid! But when trouble is afoot, Isla must use her enchanted mermaid powers to team up with Barbie, her sisters, Ken, the puppies and the dolphins—together they save the day!