Crassostrea

From Tardis Wiki, the free Doctor Who reference

Crassostrea was the leader of the Molluscari. They were male, but grew female organs. They wanted to stake claim to Orbis so their race could use it as a breeding ground. They wanted to torture the Keltans so that they could eat them at their best, before the Molluscari could spawn. As the stellar manipulator crashed into the ocean, its heat caused Crassostrea to begin spawning. (AUDIO: Orbis)