Mako Mermaids Meeting Rita (2013– ) Online
Attempting to capture Zac in his natural environment, Sirena, Lyla, and Nixie follow him to school. When their plan fails, the school principal, Rita Santos confronts them and confiscates Sirena's Moon Ring. In trying to get the Moon Ring back, the mermaids uncover Rita's secret - she too is a mermaid! Begrudgingly, Rita agrees to help the mermaids while they're on land.
| Episode cast overview: | |||
 | Lucy Fry | - | Lyla |
 | Ivy Latimer | - | Nixie |
 | Amy Ruffle | - | Sirena |
 | Chai Hansen | - | Zac (as Chai Romruen) |
 | Dominic Deutscher | - | Cam |
 | Gemma Forsyth | - | Evie |
 | Rowan Hills | - | David |
 | Brooke Nichole Lee | - | Carly (as Brooke Lee) |
 | Deshay Padayachey | - | Biology Teacher |
 | Monte | - | Poseidon |
 | Kerith Atkinson | - | Rita |
First appearance of Principal Rita Santos.
First appearance of Poseidon, Rita's cat.
Suncoast High is the name of the high school that Zac, Cam, Evie, David, and Carly attend.