Vibrio harveyi bacteria (V. harveyi)
Only glow when they are in a sufficiently large group (known as a quorum)
Decorative Image Image: Graphic textLong Description: Can you guess what happens when V. harveyi achieve a quorum?
Image: Graphic textLong Description: Answer: Using a chemical strategy dubbed quorum sensing, bacteria a) Assess their own population size b) Distinguish themselves from all other kinds of bacteria