Dinophilida

Dinophilida is a small group of minute, worm-like invertebrates that inhabit saltwater or brackish water. They are considered to be of uncertain systematic position, but are sometimes included as a class within the Trochelminthes. The name "Dinophilea" is derived from Greek words meaning "whirlpool" and "loving," possibly referring to their habitat or movement. The genus Dinophilus was introduced in 1848, and the group name Dinophilea was later introduced in 1897. Dinophilida are sometimes grouped with other orders like Nerillida, Polygordiida, and Protodrilida within the order Archiannelida.12