Where are Nivkh languages spoken?

The Nivkh language is spoken in eastern Siberia, specifically within two primary regions: along the estuary of the Amur River and on Sakhalin Island.123

While the Nivkh people are categorized as a Paleo-Siberian group, their language is considered an isolate, meaning it is not known to be related to any other language. Today, it is spoken by only a small percentage of the ethnic group, with the speaker population divided roughly equally between the Amur River estuary and Sakhalin Island.1423