between Andreanof and Fox Is., Aleutian Is.; 43 miles wide.
Aleut name derived from Amukta Islands; published in 1847 as "Proliv Amukhtenskiy" meaning "Amukhten Strait", on Russian Hydrographic Dept. Chart 1379. Known to the whalers as "Seventy-Second Pass" because it is located 172W.