Mako: Island of Secrets is an Australian television programme for children and teenagers.
Internationally released as Mako Mermaids, the show is a spin-off of H2O: Just Add Water and is produced by Jonathan M.
Shiff in association with Network Ten and Nickelodeon.The series follows Zac, a teenage boy who turns into a merman after accidentally falling into a magical pool of water on the fictional island of Mako.