By Costello, C., Cao, L., Gelcich, S. et al.:

“Global food demand is rising, and serious questions remain about whether supply can increase sustainably. Land-based expansion is possible but may exacerbate climate change and biodiversity loss, and compromise the delivery of other ecosystem services2,3,4,5,6. As food from the sea represents only 17% of the current production of edible meat, we ask how much food we can expect the ocean to sustainably produce by 2050.”

Read the full article at nature:

https://www.nature.com/articles/s41586-020-2616-y#citeas