H2O: Mermaid Adventures

Worrying events agitate the little underwater community of the Bay: clownfish are inexplicably disappearing one after another. The mermaids try to get to the bottom of this mystery, to find their friend Ziggy.

Cleo is down in the dumps: she might lose her job at the Oceanic Center, since she said she's allergic to water, to avoid getting wet in front of Mr. Lambert. Swimming out at sea, she wanders into a strange stone circle.

It's Valentines Day! Lewis and Abby spend the day together like sweethearts. Cleo goes crazy with jealousy. She finds out that Lewis has promised to tell Abby a huge secret. And what if Lewis were to betray Cleo and her mermaids friends?!

The inhabitants of the Bay are overwhelmed: one of the dolphin twins, Robby, has disappeared, captured by an unknown speedboat. Bernie calls on our three mermaids for help. Why would anyone kidnap a dolphin?

In her sleep Cleo creates huge spheres of water that float through the air in Dolphin City, causing chaos.

The girls find some turtle eggs on Dolphin City beach: they are too fragile to move, so they take turns watching over them till they hatch. But that's not counting with Miriam and Zane - who are having a beach party!

The White Mermaid is in danger! Her sanctuary, the sunken galleon of Edward the Cruel, is about to be discovered by Stanley Finch, the famous explorer. The girls decide to stop him, and make his boat take another course.

After being carried by a current into the underwater stone circle, Rikki is victim of a terrible spell: she cannot turn back into a human! To break the spell, she has to wait for the full moon - in three days' time!

The Bay prepares for a great excitement: there's soon to be the first great robotics competition organized by the Dolphin City University. The events will take place underwater, and Lewis wants badly to win first prize.

Emma's kid brother Elliott happened to see Rikki's mermaid tail in the water! He starts telling everyone he's seen a sea monster. To cover up, the girls and Lewis start building a fake monster, to make people think it was all a hoax.

The Vandals are carrying out a nasty plan: they have enlisted a terrible horde of stinging jellyfish to sow terror in the Bay. But the mermaids aren't able to respond.

A lunar eclipse makes Cleo lose her power!! Lewis tries to get it back using scientific methods, but he runs into a lot of trouble! Meanwhile, Teddy the kid turtle has got into trouble with Bernie and the other animals in the Bay.

The famous explorer Stanley Finch, is back in Dolphin City, with an amazing hi-tech mini-submarine. He's decided, this time, to find Edward the Cruel's sunken galleon. Lewis gets enrolled as Stanley's assistant in the little submarine.