Ondina

Ondina is a main character of H2O: Mako: Island of Secrets. She is a mermaid from the Southern Pod and a former teacher. She is portrayed by the starring cast member Isabel Durant.

During Season 2 Ondina tried to find a way to remove Zac and Evie's powers. She made human friends and fell in love with a merman named Eric. Ondina discovered the threat of a merman chamber and also Mimmi and Zac's past.

During Season 3 Ondina was already living a life both on land and in the Pod. She and her friends Evie and Mimmi met a new mermaid named Weilan that accidentally was followed by a dangerous water dragon that had the ability to remove merpeople's powers forever and wiped out the entire Eastern Pod. In the end she found out that the water dragon was Nerissa, Zac and Mimmi's biological mother.

Early Life
Ondina was born in the Southern Pod. She graduated from the mermaid school and became best friend with Mimmi at some point.

Meeting Zac
Ondina and Mimmi tried to remove Zac's powers during his seventh cycle of the moon and accidentally turned Evie into a mermaid and Zac's connection to Mako increased.

Attempt to remove Evie's powers
Shortly after Evie got turned into a mermaid Ondina and Mimmi tried to use a spell to remove Evie's powers. Mimmi and Ondina only create problems to Evie and the spell failed.

Powers
Ondina possesses all powers of a natural mermaid.
 * Hydrokinesis: Ondina possesses the ability to manipulate water. She can make the water to have a shape and can change it. She can also levitate water and other liquids.
 * Aerokinesis: Ondina possesses the ability to manipulate the air. She can use this power to levitate and manipulate solid objects.
 * Hydro-Thermokinesis: Ondina possesses the ability to control the temperature of water. She can boil water with her powers.
 * Hydro-Cryokinesis: Ondina possesses the ability to control the temperature of water. She can freeze water and other liquids with her powers.
 * Atmokinesis: Ondina possesses the ability to control weather. She can summon a storm or make it disappear.

Abilities

 * Moon Ring's Usage: Ondina has a moon ring that uses when she needs. She learned how to use it with a lot of practice.

Season 2

 * The Seventh Cycle
 * Sticky Situation