(Pyura praeputialis)
Pyura praeputialis is an intertidal and shallow water species of tunicate. It is one of three species of "cunjevoi" in Australasia (the other two being the yellow cunjevoi P. dalbyi and the doppelganger cunjevoi P. doppelgangera). It is the first reported species of marine organism to create a "foam-nest" for its larvae.