Sabrina, Down Under (1999)

This time around, perky witch-in-training Sabrina heads to Australia in the company of her British friend, Gwen. No sooner has the magical heroine arrived than she meets and falls for a muscular merman named Barnaby, who lives in a secret mermaid colony. Motivated by both love and a sense of ecological duty, Sabrina dedicates herself to saving the colony from discovery by a headline-chasing biologist, and from pollution caused by local fat-cat industrialists. Meanwhile, Sabrina's talking cat, Salem (actually a warlock who has been transformed into a cat), embarks upon a romantic adventure of his own with a similarly enchanted female feline named Hillary.