Halofolliculina corallasia

Halofolliculina corallasia is a heterotrich ciliate  identified as a cause of the syndrome called  Skeletal Eroding Band (SEB). It is the first coral disease pathogen that is a  protozoan as well as the first known to be an eucaryote; all others identified are bacteria. Like other members of the folliculinid family, H. corallasia is sessile and lives in a "house" called a lorica, into which the cell can retreat when disturbed. The mouth is flanked by a pair of wing-like projections that are fringed with polykinetids, groups of cilia that work in groups to produce a current that draws food into the "mouth".