You spin me right round!

How do most creatures react to extreme and sudden stress? They run around! The world’s freshwater is filled with tiny organisms that do just that.

Daphnia is a small shrimp-like creature that lives its life hopping through water (and for that, often called a “water flea” - see the video below!).

After further analysis of their movements, we can draw conclusions on the state of the environment:

normal behaviour meaning stable environment and stressed behaviour signalling a disruption.