“Mako Mermaids” is an Australian television series that follows the adventures of three mermaids—Zoe, Sirena, and Nixie—who protect their magical island, Mako Island. The show is a spin-off of the popular series H2O: Just Add Water and focuses on the challenges the mermaids face when a human boy named Liam discovers their secret. The series explores themes of friendship, loyalty, and the balance between the human and mermaid worlds. Each episode features magical transformations, underwater adventures, and the mermaids' efforts to keep their existence hidden from humans while navigating their own personal struggles.