Offshore mariculture GHG emissions 40% lower than land-based: study

Offshore mariculture, or aquaculture in marine coastal environments, offers a promising solution to meet increasing global food demand with significantly lower greenhouse gas (GHG) emissions compared to land-based aquaculture. A recent study published in Nature Food shows that GHG emissions from mariculture, including methane (CH4) and nitrous oxide (N2O), could be 40% lower than those from freshwater aquaculture. The reduction is attributed to the lack of need for artificial feeding and the natural processes in the marine environment. Despite requiring more energy, the overall carbon footprint of offshore mariculture is substantially lower, making it a sustainable alternative for future food security. (Nature)