In Barbie Mermaid Adventure, Barbie assumes the role of a specimen of that mythical fish-human hybrid, the mermaid, and plans a party with all of her undersea friends. Unfortunately, a magical light shell in the main palace broke. In order to fix it, Barbie needs to enlist the help of 3 rainbow dolphins.

Explore three exotic undersea worlds!; Play seven fun-filled games and activities!; Care for cuddlefish, free Whisper the whale, and more!; Collect decorations and hand out party invitations!; Help Mermaid Barbie and her friends compose the "Song of the Sea"!; Play two of a kind with school fish and watch them dance at the celebration and design a crown and necklace for Barbie to wear!

Join Mermaid Barbie and Samika the seahorse on an amazing underwater journey! Everyone in the ocean city is preparing for a big celebration, but the light from the magic shell has faded! Help Mermaid Barbie follow the sparkling path to find the rainbow dolphins and return the light to the shell before the event starts! Hand out invitations, play musical instruments--even create a song along your way! Plus, decorate the city and invite your undersea friends to the magical sea celebration!