Aquaculture has been active in Canada since the 1980s. There are several species of fish, shellfish and seaweed currently being raised for consumption across Canada, but Atlantic salmon is by far the largest produced and the greatest value. The vast majority of these salmon are raised in the ocean waters of British Columbia (where it is not a native species), New Brunswick, Newfoundland and Labrador and Nova Scotia.
Most farmed Atlantic salmon are held and grown in cages that float in the ocean (open pens). These are usually located in areas where they are protected from storms but have good water flow. As a result, they are often placed in sheltered bays or near the mouths of rivers.