Amazon.com description: Product Description: Light bulbs changed the world forever. But did you know there are animals that have been glowing naturally for millions of years? Even the smallest algae and plankton take part in natures light show. Understand how bioluminescence also helps fireflies, lantern fish, flashlight fish, and other animals survive and thrive. This series supplements life science classroom material by going deeper into some of the fascinating ways that these light producers interact with their environments.