26. Graduation
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The girls get resourceful to prevent the impact of the comet. Will they save Earth before graduation?
25. A Date with Destiny
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The girls must force a comet away from Earth using the magnetic crystals' powers.
24. Too Close for Comfort
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Cleo shows concern for her job when her father gets a second gig at the marine park.
23. Beach Party
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A massive beach party leaves room for misunderstandings -- until real feelings come to light.
22. Mako Masters
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When the full moon rises early, the girls confront the water force and receive a message about Mako Island.
21. The Jewel Thief
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The girls must recover a necklace containing a magic crystal when someone steals it to get Rikki's attention.
20. Queen for a Day
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Sophie lands a job at the cafe, to Bella's chagrin.
19. Breakaway
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Will competes in the free-diving championship competition and breaks away from Sophie's influence.
18. Into the Light
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Ryan sets out to explore Mako Island. To protect their secret, Rikki warns Bella and Cleo, and tries to stop Ryan from discovering the moon pool.
17. A Magnetic Attraction
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Cleo's introduced to Ryan, a young geophysicist working for Samantha. Rikki's time at the moon pool leads to a discovery about her powers.
16. The Dark Side
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Rikki goes to Mako Island to confront the strange force in the moon pool.
15. Power Play
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Sophie swipes Bella's idea for a fundraising concert at the cafe.
14. Mermaid Magic
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Will pushes himself too far when Zane challenges him to a free-diving competition. The girls discover a crystal in the rock from the moon pool.
13. To Have & to Hold Back
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Kim tries derailing Don and Samantha's wedding as Lewis receives an opportunity to study in America.
12. Crime & Punishment
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When Rikki is held hostage, Will, Cleo and Bella must work together to save her.
11. Just a Girl at Heart
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When Bella helps Will with his diving, she tries to sort out his feelings for her. An unexpected booking has the cafe overrun with children.
10. Revealed
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As Will begins to piece the mermaid mystery together, Bella tries to keep her secret from him.
9. The Sorcerer's Apprentice
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Cleo experiments with the magic moon pool water. Rikki later gets the water into Cleo's aquarium by accident.
8. Kidnapped
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Cleo hosts a sleepover for the girls on the night of the full moon -- until they end up on a rescue mission for Bella.
7. Happy Families
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Cleo and Kim get to know their father's new girlfriend. Bella applies for a job at the cafe.
6. Secrets & Lies
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Bella sets up a study date with Will. Lewis pulls inspiration from the moon pool for his science project.
5. Big Ideas
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Zane hosts a dirt bike race to help the cafe bring in money. Lewis and Cleo continue with their moon pool investigation.
4. Valentine's Day
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The girls each are experiencing trouble in love as Cleo's father, Don, finds a pretty prospect.
3. Keep Your Enemies Close
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Cleo seeks a new job as an assistant dolphin trainer at the Marine Park. Meanwhile, Rikki takes issue with Nate's band playing at the cafe.
2. Jungle Hunt
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Will attempts to look into his experience on Mako Island, but Bella offers to direct him away from the moon pool to protect the girls' secret.
1. The Awakening
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With their final year of high school ahead, Cleo and Rikki make a new friend in Bella, meet new boy Will and encounter a strange force on Mako Island.