Rona

Rona is a selkie, a young woman who can turn into a seal. Lonely and isolated within her own selkie pod, Rona grows interested in a nearby island inhabited by humans and incites their ire by choosing to explore it. But when her sealskin is mysteriously stolen, Rona can no longer transform into a seal, and must find a way to integrate with the human inhabitants of the island. After living apart from humans her whole life, she is forced to choose the kind of life she wants to lead and to figure out what is truly important to her.