The fact that it can’t survive by itself and that its depended of other fishes takes away the sustainability for me. The fact that they are getting viruses because of the close space means that Its not a stable way for the salmon to live. We are compromising the salmon existence just to satisfy our desire of money and fish. 

There is no sustainability is farms, is just an easier and safer way to hunt fish because one already have it. Its seams that with the way we are going we will cause the extinction of this animal, not his long lasting survival.

Forest industry is not very sustainable. The forest even if is replanted it will not be the same. The trees obtain by this method would not be of the same quality and we are harvesting them faster then what they are planting them. Even if we are planting more trees, we are still taking more then what we are growing. A good tree takes years, too long for the same human that planted it to harvest it, so is not really a good choice. Right now we still have some good old trees but we are getting rid of them, and they will not grow back if we don’t give them some more years. This is not really a give and take situation because we are not giving the same we took. Is not sustainable because we will finish the old grow and they would not grow again.

On another thought the fact that this trees are planted in monoculture and by human hand made me think that they could not really survive without help, I mean they where not made by nature so they may not be strong enough for it. The fact that they are cultivated in monoculture means that is just one of them needs to fall for all of them to die. They are not well prepared for nature so they may not survive it.