Euglena are single-celled organisms that move using flagellar locomotion. This means they propel themselves through their environment using a flagellum, which is a long, whip-like structure that extends from the cell.

Here's how it works:

* Structure: The Euglena has a single, long flagellum located at its anterior (front) end.

* Movement: The flagellum beats in a whip-like motion, creating a force that propels the Euglena forward.

* Direction: The Euglena can change direction by altering the beating pattern of its flagellum.

It's important to note that Euglena also exhibit euglenoid movement. This refers to their ability to change their shape and move by contracting their cytoplasm. This is a less efficient form of locomotion than flagellar movement but is still an important means of movement for Euglena, particularly when navigating through tight spaces or when they are stationary.