Stentor

noun

A genus of tiny single-celled organisms (see protozoa) occurring in fresh water. Up to 2 mm long, they are trumpet-shaped, with tracts of hairlike cilia over the body surface, and are often attached by a stalk to the substrate. They feed by wafting currents of water containing bacteria, algae, and protozoans into the funnel-shaped gullet entrance. Phylum: Ciliophora.