Open-net fish farming (as seen in British Columbia) always seemed a bit crazy to me.

There are a lot of fish farms that are actually on land, and just get their water from the sea. Here's one in Praia de Mira, Portugal: https://www.youtube.com/watch?v=VE1_ExgfrSg (my video, I have relatives who used to work there).

So I guess this "enclosed" salmon farm in Scotland is half-way between the two. In the ocean itself, but not with open nets. Is this Loch Long considered to be "in the ocean" ?