- One large island — Big Ushkan Island, 9.5 km² or 3.7 sq mi.
- Three islets: Long Ushkan Islet (1.25 km length), Thin Ushkan Islet (17 m height from Baikal's surface), and Round Ushkan Islet.
A part of Transbaikal National Park, the Ushkan Islands are becoming a popular tourist destination. Nevertheless, special permission is required for landing on the islands — such means are imposed to reduce the impact of human activity and to save the natural conditions of the islands.
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