Atlantic sea channel between the Outer Hebrides island group on the west and the mainland of Scotland on the east. The channel varies in width between 25 and 45 miles (40 and 70 km) and has both great depth and a rapid current. The Little Minch, its southerly extension, lies between the island groups of the Outer and Inner Hebrides, separating the islands of Harris and North Uist in the west from the island of Skye in the east.