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Mimmi shows the girls that she can do a duplication spell with her Moon Ring. Erik finds a pearl while swimming that he gives to Ondina (he knew she liked them). Ondina shows Erik the sea entrance to Rita's house and the duplication spell. While making more pearls, she accidentally turns him into a duplication of Poseidon, Rita's cat. When Mimmi shows up, Ondina tries to change them back and winds up duplicating the two cats into four. Carly spends the day at the beach while Cam is on lifeguard duty. Since Erik has not shown up for work, Sirena and Evie help David with deliveries. Sirena and David arrive at Rita's house and accidentally let Poseidon (or Erik or a duplicate) out of the house. They leave the door open while trying to find the cat, so two more escape. Back at the beach, one of the cats approaches Carly and she becomes attached to it. Evie and Zac see another cat while delivering to her father's boat. Rita arrives home unexpectedly and the girls begin to panic when Mimmi ... Written by grrlpunk
All Episodes - S03
EPS01
Zac Struggles to come to terms with the news that he's a real merman, adopted and has a new sister. ...
EPS02
Sirena and Mimmi are training Evie outside when Cam approaches and ends up being splashed with Moon Pool water, which absorbs into his skin. He quickly finds out that he ...
EPS03
Mimmi shows the girls that she can do a duplication spell with her Moon Ring. Erik finds a pearl while swimming that he gives to Ondina (he knew she liked them). Ondina s ...
EPS04
Cam discovers a series of five outcrops on Mako reef that look a lot like the placement of the symbols on the pedestal in the Merman Chamber. He and Erik investigate one ...
EPS05
Sirena stops Carly from showing David a video of a Canadian kayaker being lured by a mermaid's song. Sirena watches it (with earphones) after they leave to go study. Sire ...
EPS06
It's Evie's birthday! Zac is throwing her a surprise party at her house with her father. In order for it to be a surprise, Zac thinks that he should act as though it's an ...
EPS07
Rita and Mimmi visits Dr. Ross at the Marine Park. While they go off to do some paperwork, Mimmi takes a look around and meets a dolphin. A Marine Park worker named Chris ...
EPS08
The girls discuss the upcoming full moon. Sirena wonders if she'll ever see her sister Aquata again if the pod moves north. Ondina stresses that they should prevent Zac f ...
EPS09
Ondina and Erik discuss the pod coming back. She is optimistic that they will come to understand that mermen are not the enemy but Erik is not convinced. They discuss it ...
EPS10
Mimmi is upset that Ondina has decided to stay on land. Cam takes Carly fishing near Mako Island for their first date. The boat's anchor gets stuck so they swim to Mako t ...
EPS12
Cam tells Erik that the trident's stone glowed when mermaids were near. Erik then approaches Zac about finding the broken pieces of the trident. Zac goes to Sirena, Mimmi ...