Pleurobrachia

Pleurobrachia, a genus of Jellyfish belonging to the class Ctenophora (q.v.) and the type of the family Pleurobrachiadw. The body is egg-shaped, about an inch in length, and has a pair of long tentacles which stream back behind. It is transparent and gelatinous. The genus is common in estuaries on the south and east coasts of England.