Olhao has a good harbour at the head of the Barra Nova, a deep channel among the sandy islands which fringe the coast.
The total length of this group, from Barra Head to the Butt of Lewis, is 130 m., the breadth varying from less than 1 m.
There were also the Macdonalds of Clanranald and Glengarry (descendants of Somerled), with the powerful houses of Macleod of Dunvegan and Macleod of Harris, M`Neil1 of Barra and Maclean of Mull.
It has been commonly believed to have two breeding-places in the British Islands, namely, St Kilda and South Barra; but, according to Robert Gray (Birds of the West of Scotland, p. 499), it has abandoned the latter since 1844, though still breeding in Skye.
The Scottish seaboard is divided for administrative purposes into twenty-seven fishery districts, namely, on the east coast, Eyemouth, Leith, Anstruther, Montrose, Stonehaven, Aberdeen, Peterhead, Fraserburgh, Banff, Buckie, Findhorn, Cromarty, Helmsdale, Lybster, Wick (15); on the north, Orkney, Shetland (2); on the west, Stornoway, Barra, Loch Broom, Loch Carron and Skye, Fort William, Campbeltown, Inverary, Rothesay, Greenock, Ballantrae (10).