Emerald is a British children's television series developed by Harriet Munchester. It is a spin-off of Isadora Moon.
Premise Emerald's life is changed from being a mermaid living with her dad and his girlfriend above their restaurant to inheriting a princess stepsister and becoming a princess herself when her Mum marries the Sea King. She navigates this new world, living between two homes and being part of a blended family. Theodore the Sea Unicorn and Shelly the Sea Turtle help her with the transition.
Characters Main characters Emerald (Voiced by Iris Wardill) - a mermaid who works at a restaurant and a princess. She's sometime a musician. Delphina (Voiced by Eve Ridley) - she is Emerald's stepsister Theodore (Voiced by Rasmus Hardiker) - a sea unicorn Shelly - a sea turtle Hamish (Voiced by Rasmus Hardiker) - owner of a restaurant King Auster - the sea king Coral (Voiced by Allison Arnopp) - Emerald's mom who is now a sea queen Pearl (Voiced by Faith Omole) - Hamish's girlfriend
Supporting characters Rudy - an angel fish who sometimes grumpy
Mer Kid - Sky VIP competition winner, guest role (Voiced by Ayla Khan)
Episodes
Production On July 9, 2024, Sky Kids in the United Kingdom commissioned the show, subsequently announcing that it was set to air in 2025.
On August 28, 2025, it was announced by the sales company Madgic Distribution that the series will be produced by British independent production company Kelebek Media.
References