Sarah is going deeper and deeper into the sea where she saw so many pretty fishes and some weird-looking creatures in different colors, shapes, and sizes, that she had never seen before.
But soon the creatures she saw were dwindling little by little until they disappeared.
When she looked down at the seafloor she saw a great cave that was more like a large dark tunnel which goes deeper under the sea.
Even though she is a bit scared to go into a dark place like that tunnel, Sarah lets go of her fear and goes inside it.
Later some glowing fishes illuminated her path while some were pushing her balloon and helping her move faster.
Before they reach the end of the tunnel, Sarah's balloon bursts and she needs to swim fast before she runs out of breath.
"Thank goodness. I made it!... Thank you so much, glowing fish!" Sarah said to the fishes and then they swam back to the sea.