The Nympus are the native sapient inhabitants of Ganymede.


They're described as grotesque beings with short knee-less legs (jointed only at the hip and ankle), long arms webbed to their bodies by a membrane, and noseless faces which are almost hidden by the mushroom-like format of the top of their heads.

Culture and societyEdit

They build up floating houses which can be carried over long distances during the flood seasons.


  • "Tidal Moon", by Stanley G. Weinbaum and Helen Weinbaum (1938)
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