only season 1 to 3. i don't doubt there won't be season 4 unless hopefully contract or new movie either. i am not sure if there will be season 4 or not.

claire holt as emma left in season 3 for film. so replaced indiana evans as bella in season 3.

so claire holt and phoebe tonkin as cleo left for american for new tv series.

indiana evans as bella and cariba heine as rikki remains in australia for tv and film.

that's all i know !!! :)