Sabrina Spellman is a character from Sabrina, Down Under. In the live action intro she shows briefly her mermaid form. While in the animated series: Sabrina, the Animated Series Episode 62 titled "Wiccan of the Sea" she was a temporarily a mermaid, along with her friend Chloe, and her cat Salem. Emily Hart in the animated series.
Sabrina was turned into a mermaid, along with her friend Chloe, and her cat Salem, when she wished for a warm sunny day during their cold winter.