Paramecium caudatum uses the cilia not just for locomotion. Food particles are swept into the oral groove where they enter the cell and are transported throughout the cell in food vacuoles.

This micrograph is made with a contrast technique called differential interference contrast. It gives an optical section of the organism. Paramecium is actually completely covered with cilia.

Part of the Collection of the Ciliate Centre of the Micropolitan Museum © Wim van Egmond