Once upon a time, there was a tiny bacteria named Glo who lived in the twilight zone. Glo had a special molecule called luciferin and an enzyme called luciferase. These allowed Glo to glow in the dark, just like a firefly. This bioluminescent light helped Glo blend into its environment and avoid predators.
One day, a predator came hunting in the twilight zone. It was searching for its next prey, but it couldn't see Glo because of its camouflage. The predator was getting closer and closer, but Glo didn't panic. Instead, it used its bioluminescent light to draw the predator away from its friends.
Glo's light was so bright that it attracted the attention of another creature who was searching for oxygen. This creature was grateful to Glo for leading the way and thanked Glo for its bravery. From that day on, Glo was known as the bravest bacteria in the twilight zone.
The End.

Reflections

1. Why did Glo use its bioluminescent light to attract the predator?
2. How did Glo use its light to help another creature?
3. Why was Glo called the bravest bacteria in the twilight zone?
4. What is the role of luciferin and luciferase in Glo's bioluminescence?
5. Can you think of any other creatures in nature that use bioluminescence to survive?