The Molluscari were a race described by the Eighth Doctor as "aggressive space oysters".
The Molluscari were hermaphroditic and required specific temperatures and some feasting before they could mass spawn. (AUDIO: Orbis)
The Molluscari travelled through space in clam ships. They carried information in data pearls. (AUDIO: Orbis)
The Molluscari were responsible for the massacre of the Tetrapoids and the firing of the Mugwater vents. (AUDIO: Orbis)