Mako Mermaids is an Australian television program for children, pre-teens and teenagers, and is a spin-off of H2O: Just Add Water. The series, announced in July 2011, is produced by Jonathan M. Shiff in association with Nickelodeon. The show was originally titled Mako: Islands of Secrets, but was later changed to Mako Mermaids. Then the title changed again to Secret of Mako Island and back to "Mako Mermaids" again.
Disney Channel (US) has picked up the series, and the pilot aired on January 18, 2016 at 5pm (Eastern).