3 mi. SE of Great Sitkin I., between Adak and Atka Islands., one of Andreanof Islands., Aleutian Islands. 6.7 miles long.
Aleut name recorded as "Egilka" by Commodore Joseph Billings, Imperial Russian Navy (IRN), in 1790 and published by M. Sauer in 1802.
Aankuuga, Alugasux, Azamis Cove, Chalux, Chigulam Udaa, Chuguugix Iilamiizax, Chuhngudugis, Daa Agidgix, Hanisxa, Igitkin Bight, Iiqiisix, Naagix Adimtusix, Nahmagix, Ngam Ulaa, Nguugix Iilamiizax, Qagaagix Chalux, Qahnichxucha, Qigaagix Adimtusix, Qigaangax, Round Cove, Saamlus, Shelter Cove, Tagalam Udaa, Ugiilagaadax, Ulgusix, Umak Bight, Uuhmugzux, Yoke Bay,
Aalux, Agony Point, Bugle Point, Cape Agumsadak, Cape Azamis, Cape Chakik, Cape Kagalus, Cape Ruin, Cape Umak, Cathedral Point, Elbow Point, Igitkin Point, Iqalax, Kingfisher Point, Knaxchiing, Moss Point, Narrows Point, Passage Point, Reach Point, Rip Point, Sulphur Point, Tanager Point, Uchixsax, Zaliva Point,