Barbie Bubble-Tastic Mermaid Doll Girls can create their own fantastic fun with the Barbie Bubble-tastic Mermaid doll that not only makes a splash but also makes bubbles, bubbles, bubbles! Fill the included shell-shaped dipping tray with bubble solution Dip Barbie mermaid dolls giant fin, with its large decorative cutouts, into the solution and remove Pull the string on dolls back multiple times to cause the tail to spin and create a fabulous whirlwind of bubbles! A 2-ounce starter bubble solution is included, but any generic bubble solution will work with the doll