Take control of Barbie, a marine biologist, as she explores an underwater world full of mini-games and activities to complete her quest and assemble the final treasure map. Guide her through 9 different maps collecting puzzle pieces along the way by finishing various mini-games such as a pong type game, a puzzle slider, a Kaboom style cannonball catcher and more. Interact with the various aquatic life in the maps and watch them swim around in interesting patterns.

The Windows version of the game is entirely mouse controlled, the keyboard is only required when the player signs in for the first time. In addition to the same mini games the Windows version features a camera icon which takes snapshots of barbie as she explores. These pictures are held in the game's scrapbook and can be printed out. Barbie also has some handy tools, a magnifying glass and a torch, to help her explore the ocean. Barbie talks throughout this game and a soundcard and speakers are essential.