The old phylum of Protozoa is recognised to be a paraphyletic group containing a diverse range of taxa grouped together only because of their simple body plan lacking complete tissues and being somewhat heterotrophic.  As such the clade Protozoa is now considered to be a paraphyletic kingdom containing meany phyla which are both related and un-related.  The phylum Ciliophora contains many large complex protozoans which utilise the beating of hair like structures called cilia to create movement of either themselves or the medium which carries their food to them.