Bioluminescence is a chemical reaction. This reaction causes the firefly’s abdomen to glow. 

Look at the pictures and answer the question.

Organisms called single-cell dinoflagellates are bioluminescent, which can cause the ocean water to sparkle.

Look at the pictures and answer the question.

Some companies are working to create bioluminescent light displays using tiny, bright bacteria.

Look at the pictures and answer the question.

Let's watch a quick video before we begin reading!