Merliah Summers is the main protagonist in Barbie in A Mermaid Tale and Barbie in A Mermaid Tale 2. She is played by Barbie and voiced by Kelly Sheridan. Merliah is a surfer from Malibu and a half-mermaid princess of Oceana. Merliah was born to Queen Calissa and Rip. She is also the granddaughter of Break and the niece of Eris. Merliah was born half-human and half-mermaid. She was born in Oceana, an underwater kingdom, ruled by her mother Queen Calissa, but her father was just a usual human. Whe