S.M. Turk & P.E. Tompsett
Rotifers are commonly called “wheel animalcules” because of the wheel-like movements of the crown of cilia, used for locomotion and/or feeding. Some are less than 100 microns and none are more than 2mm. There are at least 37 marine species (Crothers, 1997). Eight marine species are listed for the Plymouth area (M.B.A., 1957). The only Cornish record is Zelinkiella synaptae (Zelinka) on Leptosynapta sp. from G.M. Spooner, 1949 at Penarvon Cove, Helford River system. The group status is unknown due to data deficiency.