Arvaker

Arvaker is a fictional species that appears in the works of science fiction author Ursula K. Le Guin, most notably in her Hainish Cycle novels. The Arvaker are a sentient species originating from the planet Gethen, also known as Winter. They are characterized by their androgynous nature, possessing both male and female sexual organs, but only activating one during their monthly sexual cycle, known as "kemmer." This unique biological trait has profoundly shaped their society, culture, and understanding of gender.

The Arvaker society is highly communal and has a deep respect for balance and interdependence. Their androgyny means that individuals can experience both what humans would consider male and female roles and perspectives, leading to a fluid and less rigid social structure. They have a complex system of "houses" or kinship groups that are central to their social organization, with inheritance and social standing determined through these affiliations. Their technology is advanced but often integrated with their natural environment, reflecting a philosophy of living in harmony with their world.

Le Guin uses the Arvaker as a vehicle to explore themes of gender, sexuality, identity, and societal norms. Their biology challenges conventional human understandings of sex and gender, prompting readers to reconsider their own assumptions. The Arvaker are often depicted as introspective, philosophical, and deeply connected to their environment, contributing to the rich tapestry of Le Guin's imaginative worlds. Their story on Gethen, where they interact with human explorers from Earth, highlights the vast diversity of sentient life in the galaxy and the challenges of intercultural understanding.