The islands are located at the northern side of the Duncan Passage,[9] about 6 km southeast of Passage Island and 18 km north of North Brother.

The group consists of: The islands are 220 m apart, connected by a coral reef.

They are covered by forests and have rocky shores except for a beach on the NW side of East Sister.

Politically, Sister Islands are part of Port Blair Taluk.

This Andaman and Nicobar Islands location article is a stub.