The following is an excerpt from an article published by Mongabay:

Salmon farming center. File Photo: WWF Chile – Denisse Mardones. / Mongabay

• Although there are no details of what the environmental impacts produced by Australis Mar have been, due to the overproduction of salmon, experts agree that production above the norm increases the risk of running out of oxygen in the water.
• The risk of salmon escaping into the wild is also increasing, as is the use of antibiotics. All this, they say, can have serious impacts on ecosystems, especially in marine protected areas.
 (More Info)