Leviathan's Deep is a novel by Jayge Carr published in 1979.
Leviathan's Deep is a novel in which humanoid aliens from a planet with a matriarchal society resist the cultural assimilation attempted by the patriarchal Terrans.
[1] Kirkus Reviews states "Thematically erratic [...] but when it's good, it's very good.
"[2] Greg Costikyan reviewed Leviathan's Deep in Ares Magazine #6 and commented that "The result is a gripping and powerful novel, portending good things to come from a remarkable novelist.
"[1] The novel was also reviewed by Paul Kincaid in Vector 98.