Rita Santos
Rita In Water
Full Name

Rita Santos





Resides In

Rita's house


Principal (formerly)


Harry (former fiancé; deceased)


Poseidon (cat)
Lyla (pretend niece/ally/friend)
Sirena (pretend niece/ally)
Nixie (pretend niece/ally)
Zac Blakely (student/friend/ally)
Mimmi (pretend niece/ally)
Ondina (pretend niece/ally)

Eye Color


Hair Color



Speed Swimming
Invisibility Detection
Volume Reduction


1, 2, 3, 4

First Seen

Meeting Rita

Portrayed By

Kerith Atkinson

Rita Santos is a secondary character in Mako Mermaids. She is portrayed by Kerith Atkinson.

Rita was born at the Great Barrier Reef. When she was younger, Rita swam with the pod of mermaids at Mako. But she fell in love with a land person, Harry. She used to sneak off and get legs to spend time with him - until the pod discovered what she was up to. She became an outcast. So Rita made the decision to leave the pod and forget about her mermaid life for herself with Harry amongst the land people.

Although Harry passed away, Rita has been successful on land and is the principal of a local high school. She has survived and protected her true identity by keeping a somewhat cool and distant outer image.

Although a bit lonely sometimes, Rita has more or less adapted to her life. That is until three mermaids - Sirena, Lyla, and Nixie - turn up and ask for help. Rita is torn. She gave up her mermaid life and doesn't want three reckless young mermaids blowing her cover. But Rita can't turn them away. As she becomes their mermaid mentor and guide, Rita discovers that although there are complications, the mermaids bring companionship and laughter back into her life. She might even start to enjoy the craziness!


Rita possesses the ability to transform into a mermaid ten seconds after physical contact of water. She turns back into a human a few minutes after she is out of the water and when the water on her has fully dried. Once her body is completely dry, her human form reverts back to what she appeared to be before her mermaid transformation.

Speed Swimming

Rita has the ability to swim at super speed of 600km/h, hold their breath for more than fifteen minutes, and possibly dive at a depth lower than any ordinary human being. 

Invisibility Detection

Rita used this ability to see Zac while he was in her office stealing the test for Evie. She used a hand motion and then she was able to see Zac while he was invisible via liquid water.  


When teaching the girls how to control the weather in "Battlelines", she uses this power to make a storm in a jar.


When teaching the girls how to control the weather in "Battlelines", she uses this power when she made a storm in a jar.

Volume Reduction

Rita used this power to shrink a lemon.


In "Age Before Beauty", Rita made a water ball that made a huge fireworks display at the end of the episode.


  • She has a pet cat named Poseidon.
  • Harry died before they got married as revealed in Meeting Rita.
  • She was competing with the head of the mermaid pod years ago in mermaid school.
    • Rita was the better one to use her powers.


The image gallery for Rita Santos may be viewed here.