EntoproctayoudaoicibaDictYouDict[Entoprocta 词源字典]
"A small phylum of sedentary aquatic invertebrates that resemble moss animals. They have a rounded body on a long stalk, bearing a ring of tentacles for filtering food from the water", Modern Latin (plural), from Greek entos 'within' + prōktos 'anus', the anus being within the ring of tentacles.[Entoprocta etymology, Entoprocta origin, 英语词源]