Mermaid Sister's Best Friend is based on the book, Mermaid Sister and the Disney film, The Little Mermaid. It stars Shelly, Coral, Ariel, Flounder, Sebastian, King Triton, Scuttle and Melody (first appeared in Season 6). It debuted on August 27, 2008. It was co-produced by Teletoon, Disney Channel (the creators of Pheinas and Ferb)and Cookie Jar Entertainment (the creators of Arthur and Caillou). It was on Disney Channel from 2008-2010 and later, PBS Kids GO! (With the WGBH Kids logo with Shelly, Coral, Ariel and Flounder on a tube replaces the Disney Chanel logo after the Cookie Jar logo) from 2010-present. "Under the Sea" (Insturmental Version) from The Little Mermaid is heard in the opening and closing themes.
- Shelly, a human at the beach. Voiced by Oliver Grainger. Her mom, dad and brother make non-speaking cameos.
- Coral, a mermaid who lived in Mermaid Kingdom. Voiced by Tabitha S.T. Germain.
- Ariel, a young mermaid who is Coral's best friend. She lives in Mermaid Kingdom, too. Voiced by Jodi Benson.
- Flounder, a fish who is Ariel's best friend. Voiced by Parker Goris.
- Sebastian, a crab who is King Triton's best friend. Voiced by Samuel E. Wright.
- King Triton, who is Ariel's father. Voiced by Jim Cummings.
- Scuttle, a bird who is in the sky. Voiced by Buddy Hackett.
- Melody, a mermaid who is Ariel's daughter. Voiced by Tara Strong. She first appeared in Season 6.
It was broadcast on Disney Channel (2008-2010), PBS Kids GO! (2010-present) and Cookie Jar TV in the US, Treehouse TV (2010-present) in the CAN and Disney Channel UK in the UK.
Funding for Mermaid Sister's Best Friend is provided by......
- The Corporation for Public Broadcasting (2010-present)
- U.S. Department of Education's Ready to Learn Grant (2010-present)
Additional funding is provided by.......
- Park Foundation (2010-present)
- The Arthur Vining Davis Foundations (2010)
- Contributions to your PBS stations from Viewers Like You! Thank You! (2010-present)