Atlantic salmon have a freshwater stage and a salt water stage. Up to a hundred grams they grow naturally in freshwater; after that they have to move out to sea and they usually, in nature, grow in the ocean. It's true that you can grow Atlantic salmon in freshwater, but that's not without problems. The first phase, of course, is easy, because that is what is natural; the second phase, from 100 grams to five kilograms, involves some problems. If you think about land-based systems, one of the issues would be the waste. If you have salt water waste or salt waste, you cannot use that waste as fertilizer in agriculture; you cannot use it for anything, because it's salt, and the salt will destroy all crops. If you go land-based, you have no remedy, then, to go freshwater, and it also applies to a floating salt-water system. You will always have the question of where to go with your salty fertilizer.
As to the size, our typical farms nowadays are 2,500 tonnes of production in two years. It takes two years to grow salmon. I think the largest closed-containment system in the world, which is not salmon, is probably something like 300 or 400 tonnes today. There is a large-scale difference, and for Atlantic salmon or other types of salmon, the largest closed-containment system is probably not larger than 100 tonnes at this point in time. Does that answer your questions?