Oceans would be able to feed growing world population in future

In a new study, scientists have determined that the oceans could become the source of food for the increasing human population in the future if steps are taken to expand and improve marine aquaculture.
As the world's population continues to grow, lack of fresh water and space mean that terrestrial agriculture is unlikely to be able to meet food demand, according to Carlos M Duarte of the University of the Balearic Islands, Spain, and his seven coauthors.
Freshwater aquaculture, which is largely confined to the tropics, is expanding, but its reliance on fresh water may limit long-term growth.
Fisheries catches have been declining globally for two decades, and although conservation measures and a shift in consumption patterns could allow some recovery, marine aquaculture holds more potential for sustained growth.