Atlantic salmon jumping in round marine fish pen, commercial aquafarming

atlantic salmon norway fish pen aquafarming aquaculture nutrient runoff salmon farming marine sea lice infestation jump round commercial effluent management water pollution controversial marine pen algal blooms aerial stocked export water quality overcrowding antibiotic use disease control sustainable seafood salmon farm pisciculture escaped farmed salmon norwegian husbandry market demand aquatic fishery fish farm aquafarm salmonidae oceanfarmed farmedsalmon production drone antibiotics intensive fish cultivation ecosystem impact parasite management fish welfare stocking density management plan marine ecosystem