Ep 11. Treasure Hunt

Cleo, Emma, and Rikki, three teenage girls, continue their transformation into mermaids whenever they come into contact with water. In season 2 episode 11 of H2O: Just Add Water, titled "Treasure Hunt," the girls must work together to find a valuable treasure before it falls into the wrong hands.

The episode begins with the trio out for a swim, enjoying their mermaid powers. However, they quickly realize that they are being watched by a fisherman who seems suspicious of their behavior. Worried that the fisherman might reveal their secret, the girls decide to investigate what he's up to.

They soon discover that the fisherman is on a mission to find a valuable treasure that has been lost for many years. He believes that the treasure is connected to the mysterious 'Sea Cave,' located on a nearby beach. The girls decide to investigate the sea cave themselves and find that it has been blocked off by a large boulder. They suspect that the boulder may have been placed there deliberately to keep people away from the cave.

Determined to find the treasure before the fisherman does, the girls come up with a plan to move the boulder using their mermaid strength. After some difficulty, they finally manage to move the boulder, revealing a hidden entrance to the sea cave. Inside, they find a map that they believe will lead them to the treasure.

Following the map's clues, the girls find themselves in a series of dangerous situations. They must navigate through dark underwater caves, dodge obstacles, and even outsmart a group of rival treasure hunters who are also searching for the treasure. The girls use their mermaid powers to overcome these obstacles, but the treasure remains elusive.

As they continue their search, tensions rise between the girls as they begin to argue over the treasure's true value. Cleo becomes particularly frustrated as she believes that the treasure could help her father with his financial troubles. Emma and Rikki, on the other hand, are more skeptical of the treasure's true worth.

Despite their disagreements, the girls continue their search and eventually discover the treasure. However, they soon realize that the treasure has more significance than they initially thought. It is actually a valuable historical artifact that should be preserved and not sold for personal gain.

In the end, the girls decide to donate the treasure to a local museum to ensure it is properly cared for. They also learn an important lesson about working together and putting the greater good above personal gain.

Overall, "Treasure Hunt" is an exciting episode that showcases the girls' mermaid abilities and highlights the importance of teamwork and doing what's right.