Vertical Ocean Farms Could Feed 1 Billion by 2040

A coalition of marine scientists has published a 5-year study showing stacked vertical ocean farms producing 9x the food yield per km² of traditional aquaculture, with carbon-negative net emissions. The model combines kelp, scallops, mussels and oysters in vertically interleaved layers. The authors argue that 0.025% of the world's ocean surface, farmed this way, could meet the protein needs of 1 billion people.