Almaco jack (Seriola rivoliana), in the pen at a fish farm off The Big Island, Hawaii, United States of America, Pacific, North America

Almaco jack (Seriola rivoliana), in the pen at a fish farm off The Big Island, Hawaii, United States of America, Pacific, North America

Pen containing almaco jacks (Seriola rivoliana), off the Big Island of Hawaii, United States of America, Pacific, North America

Fish pens in channel through wetlands at south end of Lingayen Gulf, near Dagupan, northwest Luzon, Philippines, Southeast Asia, Asia

Salmon farm at Drumbeg in Assynt, Sutherland, Highlands, Scotland, United Kingdom, Europe

Sea Pen

Harvesting fish from net pens belonging to Kampachi Farms offshore of Kona, the Big Island, Hawaii, during the summer, Island of Hawaii, Hawaii, United States of America

Southern bluefin tuna a dead bluefin tuna caught in a tuna pen of a fish farm are offshore of Port Lincoln South Australia