At 31 kilometres (19 mi) long, it is the longest sea loch in the Highland local government area.

A considerable part of the loch is leased for aquaculture, with fish farming, originally only of salmon but now somewhat diversified, being established in the 1980s.

At the cost of slight inconvenience to the congregation, a mooring was chosen below the township of Ardnastang, in the bay of Eilean a’Mhuirich, about 1.25 miles west of Strontian.

The church being ready for public worship the congregation were ferried out that Sunday morning between the hours of ten and twelve.

[5] The MPA is designated a Category IV protected area by the International Union for Conservation of Nature.