Cora and Mo followed the arrow.
Others were swimming toward the surface too.
"Everyone wants to see the sky colors!" Cora said.
Mo laughed. "Even Walt is going!"
"Walt! Do you like the lights?" Cora asked.
Walt shrugged. "They're okay.
Sometimes they make too much noise."
Soon everyone reached the surface.
They bobbed happily in the water.
"I hope the show starts soon," Cora said.
Just then Cora saw something move in the sky.
"The sky colors?" she thought.
No! It was a huge seagull!
The seagull swooped low over the water.
Cora gulped. "Uh-oh!" she thought.
"It's looking for food. And . . ."
The seagull spotted Mo!
"Mo!" Cora shouted. "Quick! Puff up!"
Mo made himself big and spiky.
"Grr!" The seagull squawked in anger.
Then it flew away.
"Phew!" Mo said. "Thanks!"
"You're safe now," Cora said.
"And look! The show is starting."
Boom!
"What's that sound?" Mo said.
"The sky colors!" Cora said. "They're loud."
Then she heard a soft sound.
"Help me! I'm in danger!"