Intelligent Mollusk

An unnamed species of "super-intelligent mollusks" inhabits the soupy shallow oceans of Venus, over half a billion years in the future.

In one of his adventures while travelling through time and space, occultist Titus Crow conversed telepathically with these creatures. When he revisited Venus ten million years later, Crow found that the mollusks were no longer present on the planet, as a plague had eradicated all life and rendered the oceans sterile. It's not known whether the mollusks died out or left their homeworld to settle somewhere else.

Appearances

 * The Transition of Titus Crow, by Brian Lumley (1975)