There was something new in Sylvanian Land - a mermaid castle!
The babies were very happy to hear about it, and asked their parents to take them to the amusement park so they could play in it.
The babies dressed up in sparkly outfits - just the right clothes for a mermaid castle!
Crème the Chocolate Rabbit baby wore a rainbow dress that made her look like a mermaid princess.
When they arrived, the babies opened the door. There was a big shell next to it.
"Wow!" they cried. "It looks just like we're under the sea!"
"Crème, come and play on these with us!" called Apricot the Striped Cat baby and Sophie the Snow Rabbit baby.
It was a set of swings shaped like a big jellyfish!
Back and forth the three babies swung, feeling just like they were really bobbing around underwater.
What Crème really wanted to do, though, was look for treasure.
"Freya told me there's a treasure chest hidden somewhere in the castle!" she said.
Freya was Crème's big sister.
Linnea the Husky baby, who loved adventures, was thrilled to hear that. She hopped down from the Aqua-Go-Round, too excited to wait until she stopped feeling dizzy.
"Let's go!" she cried.
In the Mermaid Area, there was water full of bubbles.
Some of the smaller babies were playing there. They looked as if they were swimming.
"Do you know where the treasure chest is?" called Crème, loud enough for everyone to hear.
"Shhh!" said Linnea. "Look, Kaya's sleeping!"
So she was! Kaya, one of the little Fennec babies, was napping on a shell bed, looking very peaceful.
"Let's try the boat!" Linnea suggested.
She and Crème boarded the Dream Ship.
The smaller babies came with them.
"Look!" cried Crème. "There's a cave under the submarine!"
"Maybe the treasure is there!" replied Linnea.
They tried the cave and just as they had thought, the treasure chest was there!
Crème and Linnea opened it excitedly and looked at the treasure inside.
"A crown!" cried Crème.
Linnea put the crown on Crème's head.
"Now you're a princess," she said. "A mermaid princess!"
Crème was very happy indeed.
"We match!" she said, admiring Linnea's crown.
"Time to go home, you two!" called Freya and Hayden the Husky boy, who had come to pick them up.
"Can't we stay longer?" begged Crème.
"Why don't we swim home?" said Linnea. She had forgotten they weren't really under the sea!
Crème and Linnea made swimming movements with their arms the whole way home.