108 miles long. Between Revillagigedo I. and mainland, from W entrance at Clarence Strait at 552800N1315500W it extends N 33 mi. then NE 15 mi. through Behm Narrows to Point Whaley and then S 60 mi. to its E entrance at Revillagigedo Channel, Alex. Arch.
Named by Captain George Vancouver, Royal Navy (RN), "in 1793 after Major Magnus Carl von Behm, commandant of Kamchatka in 1779" (Wagner, 1937, p. 375).
Burroughs Bay, Fitzgibbon Cove, Portage Cove, Saks Cove,
Capes:Point Whaley, Point Fitzgibbon, Point Lees, Claude Point, Dew Point, Fire Point, Fish Point, Hose Point,
Channels:Islands:Center Islets, Gibbs Rock, Willow Islands,
Lakes:Cedar Lake, Claude Lake, Saks Lake,
Rivers:Eulachon River, Klahini River, Unuk River,
Streams: