Joan Slonczewski

A ground-breaking work both of feminist science fiction and of world-building hard SF, this concerns the Sharers of Shora, a nation of women on a distant moon in the far future who are pacifists, highly advanced in biological sciences, and who reproduce by parthenogenesis -- there are no males -- and tells of the conflicts that erupt when a neighboring civilization decides to develop their ocean world, and send in an army.