With this mystical mermaid doll, you may regale your listeners with all kind of tall stories. The Barbie Rainbow Lights Mermaid doll features a tail that, when triggered by water, offers a surprise in the form of a shimmering rainbow lights display. The doll is sold separately. The activation process is quite easy. By pushing the button on her necklace, you may turn the Barbie doll to the "on" position. The light display will start when she is submerged in water, so do that now. Rainbows are captured inside her tail's intricate detailing, which is transparent, as colourful lights begin to twinkle there on their own. It is a fantastic effect that can be reproduced over and over again, even on land; all you have to do to get the lights and the fun going is push the button on her necklace. Journey into the depths of the ocean with the Barbie Rainbow Lights Mermaid doll. She is all set to go swimming with all of her rainbow companions while wearing a bodice that is painted to resemble a ra