Episode 1
Aired Jul 7, 2006
Metamorphosis
Three teenage girls discover a secret pool when they are stranded on Mako Island.
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Episode 2
Aired Jul 14, 2006
Pool Party
Cleo, Emma and Rikki fear that their secret will get out when they attend a pool party.
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Episode 3
Aired Jul 21, 2006
Catch of the Day
Cleo must overcome her fear of water in order to enjoy being a mermaid.
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Episode 4
Aired Jul 28, 2006
Party Girls
Lewis tests the girls' powers; Cleo's younger sister becomes suspicious when she reads Cleo's diary.
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Episode 5
Aired Aug 4, 2006
Something Fishy
Cleo gets a job feeding the dolphins at a marine park; Emma has a sleepover party.
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Episode 6
Aired Aug 11, 2006
Young Love
Elliot falls in love with Rikki after she saves him from drowning at the beach.
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Episode 7
Aired Aug 18, 2006
Moon Spell
The girls ignore Miss Chatham's advice to beware of trouble when there is a full moon.
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Episode 8
Aired Aug 25, 2006
The Denman Affair
On the verge of discovering how the girls transform, Lewis considers revealing their secret to a beautiful marine biologist.
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Episode 9
Aired Sep 1, 2006
Dangerous Waters
While trying to buy a fish for Cleo, Rikki finds herself involved in a fish-smuggling operation.
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Episode 10
Aired Sep 8, 2006
The Camera Never Lies
Zane and Emma each try to make their own short film to enter into a contest at the juice bar.
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Episode 11
Aired Sep 15, 2006
Sink or Swim
Byron persuades Emma to train him for a swimming competition; Rikki plays pranks on Lewis to try and unsettle him.
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Episode 12
Aired Sep 22, 2006
The Siren Effect
The full moon turns Cleo into a magical siren who attracts boys with her angelic voice.
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Episode 13
Aired Sep 28, 2006
Shipwrecked
Emma witnesses Miss Chatham arguing with Zane because she accidentally hit his jet-ski with her boat.
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Episode 14
Aired Oct 6, 2006
Surprise!
Zane believes that a mysterious creature is living under the sea and decides to mount an expedition to catch the monster.
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Episode 15
Aired Oct 13, 2006
The Big Chill
Wilfred leaves Emma in charge of the juice bar for a weekend while he goes away to a conference.
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Episode 16
Aired Oct 20, 2006
Lovesick
A misunderstanding leads everyone to believe that Cleo and Zane are dating and planning on running away together.
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Episode 17
Aired Oct 27, 2006
Under the Weather
When a rainy day traps the girls at Emma's house, they all pretend to be sick so that they do not have to go to school.
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Episode 18
Aired Nov 3, 2006
Bad Moon Rising
Rikki escapes to Mako Island after accidentally burning Emma during a full moon.
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Episode 19
Aired Nov 10, 2006
Hurricane Angela
Cleo and Kim's relationship is strained when their manipulative cousin comes to visit.
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Episode 20
Aired Nov 17, 2006
Hook, Line and Sinker
Cleo tries to help Lewis win a fishing competition; Rikki and Zane are trapped together on the balcony of a fancy hotel.
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Episode 21
Aired Nov 24, 2006
Red Herring
Zane finds evidence linking Miss Chatham to a decades-old mermaid sea rescue; Zane pursues Rikki.
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Episode 22
Aired Dec 1, 2006
Fish Out of Water
Emma and Cleo force Rikki to choose between her friends and Zane; Harrison plans to develop Mako Island into a tourist resort.
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Episode 23
Aired Dec 8, 2006
In Too Deep
Rikki is furious when Miriam ruins her plan to buy an old locket from the local jewelry store.
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Episode 24
Aired Dec 15, 2006
Love Potion No. 9
Cleo and Emma hope that Lewis and Byron will ask them to the school dance.
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Episode 25
Aired Dec 22, 2006
Dr. Danger
Dr. Denman returns to do research on Mako Island; Emma tries to avoid going on a family beachside holiday.
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Episode 25
Aired Dec 29, 2006
Dr. Danger / A Twist In The Tail
Three friends discover they become mermaids when in contact with water.
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Episode 26
Aired Dec 29, 2006
A Twist in the Tail
The girls use the lunar eclipse to avoid being exposed by Dr. Denman.
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