Euplotes is a common protozoan found in algae samples.
They are most often seen moving up and down along filaments of
algae. Like paramecia, they use tiny hairlike structures called
cilia for movement and acquiring their food. Cilia along the oral
groove are small and support primarily feeding. Cilia at the end
of the organism are fused into larger structures that assist in
movement. Euplotes can often be seen using these larger fused cilia
to "walk" along filaments of algae. Because of their
rapid movements photographing these organisms is difficult. The
photo shown above was acquired from http://www.pirx.com/droplet/gallery/euplotes.html.
To view a movie clip that shows protozoans as seen under the micrscope