X-Nico

unusual facts about operculum


Operculum

Operculum (in pregnancy), the cervical mucus plug that blocks the cervix of the uterus after conception


Amphibola crenata

Amphibola crenata (titiko in the Māori language or mud-flat snail in English) is a species of air breathing snail with an operculum, a pulmonate gastropod mollusc which lives in a habitat that is intermediate between the land and the sea, not entirely terrestrial and not entirely marine.

Melania

Red-rimmed melania, small freshwater snail with an operculum, in the family Thiaridae


see also