between Great Sitkin and Umak Islands., Andreanof Islands., Aleutian Islands.
Name derived from Unak Island and given by the U.S. Navy Hydrographic Office in 1936 because "There being so much similarity in the names (of nearby) Ulak I., Umak I., and Unak I., serious delay might result in sending a rescue party to one of these islands, as was brought out in the 1934 report of the expedition, and for this reason Unak I. was spelled backward. . ." The name "Unak" is derived from the Aleut "unaq" meaning "wound," published by Captain Tebenkov (1852, map 28), Imperial Russian Navy (IRN) as "O(strov) Yunakh," or "Yunakh Island."
Aankuuga, Agamaxchizalix, Alugasux, Azamis Cove, Chalux, Chigulam Udaa, Chisak Bay, Chuhngudugis, Daa Agidgix, Hanisxa, Igitkin Bight, Iiqiisix, Liisis Tatuu, Naagix Adimtusix, Nahmagix, Piper Cove, Qagaagix Chalux, Qahnichxucha, Qigaagix Adimtusix, Qigaangax, Round Cove, Saamlus, Sand Bay, Scripps Bay, Shelter Cove, Tana Bight, Ugiilagaadax, Ulgusix, Umak Bight, Uuhmugzux, Yoke Bay,
Aalux, Agony Point, Bugle Point, Cape Agumsadak, Cape Akuyan, Cape Azamis, Cape Chakik, Cape Chisak, Cape Kiugilak, Cape Lises, Cape Ruin, Cape Umak, Elbow Point, Igitkin Point, Iqalax, Knaxchiing, Kyugaadax, Moss Point, Narrows Point, Passage Point, Qatxayas Yaaga, Reach Point, Rip Point, Saddle Point, Sulphur Point, Swallow Head, Tana Point, Tanagam Amaga, Tanager Point, Zaliva Point,
Amgasis, Anagaksik Island, Asuksak Island, Atangax, Aziak Island, Box Island, Chaika Rock, Chisak Island, Great Sitkin Island, Igitkin Island, Kanu Island, Little Tanaga Island, Rip Rock, Silak Island, Tagadak Island, Tanaklak Island, Tanax Angunax, Teapot Rock, Ulak Island, Umak Island,