Euglena are 35-55µm long and are a very popular flagellate used in the classroom. They have one active flagellum, a reddish eye spot and numerous chloroplasts. They exhibit both plant and animal characteristics.

Euglena thrive best where there is an abundance of rich organic waste. There are over 100 different species of Euglena.

Euglena are also able to greatly distort their body to change direction. This distortion is called Euglenoid motion.

They are readily available from science supply companies.