The surge in population has put the world's food supply under severe test. Some scientists predict that by 2050, humans will be able to support themselves by increasing the amount of arable land. But there is simply not so much arable land on the earth. So scientists turned to the oceans for help. Fish farming in open seas far from the coast can provide sufficient nutrition for human beings. We can boldly predict that the blue revolution of human food will soon begin. The text is illustrated by "the blue revolution of human food"? ['In-depth development of the sea area can make up for the lack of cultivated land on the earth.', 'Marine fish resources will account for a larger proportion of human food structure.', 'Strengthening deep-sea aquaculture can solve the problem of insufficient food supply.', 'Marine aquaculture will become the primary industry and will dominate the national economy.']