The ocean is the common home of all of us, providing oxygen, food, medicine and energy to mankind. In the 21st century, the development and protection of the oceans are inseparable from the support of science and technology. June 8 this year is the 14th "World Ocean Day" and the 15th "national ocean Publicity Day". Let's take a look at the changes that the ocean has brought to human clothing, food, housing and transportation with the support of science and technology. Big data fishery: from "difficult to eat fish" to "fish every year" In 1950, China's total output of aquatic products was 910000 tons. During the "14th five year plan" period, China's total output of aquatic products will reach 69million tons. From "difficult to eat fish" to "fish every year". In 2021, China's marine GDP will be 9038.5 billion yuan, of which the primary industry accounts for 5%. The transformation from "hunting at sea" to "cultivating the sea, herding and fishing" is inseparable from the support of science and technology. For example, the "Genghai No. 1" marine ranch in Yantai City, Shandong Province, is equipped with intelligent breeding cages, which can collect environmental data in real time, accurately feed bait, and automatically clean the cages, so as to realize intelligent ecological breeding. The marine fishery data platform can realize multi-party sharing of big data, and four employees can complete the breeding of 1000 tons of finished fish. Up to now, there are 153 National Marine pasture demonstration areas in China. It covers the Bohai Sea, the Yellow Sea, the East China Sea and the South China Sea. It is estimated that by 2025, the area involved in marine ranching will exceed 2500 square kilometers. Marine energy: one of the main forces to achieve the "double carbon" goal The sea, like mountains, breeds rich mineral resources. Many of the oil and natural gas consumed by people come from the sea. In 2021, Lingshui 17-2 gas field, a large offshore deepwater self operated gas field, was successfully put into operation. The world's first 100000 ton deepwater semi submersible production and storage platform serving the gas field - "deep sea 1" energy station was independently developed by China. In addition, the ocean is also a rich source of new energy. It is estimated that the total offshore renewable energy reserves in China are 1.58 billion kilowatts, of which offshore wind power is one of the main forces to achieve the "double carbon" goal. With the industrial development, the tide of "energy landing" will be unstoppable. Marine life: an important source of raw materials for food, protein and medicine In 2021, sunchaomin research group of Institute of Oceanography, Chinese Academy of Sciences first discovered marine microbial flora that can effectively degrade plastic waste. After careful cultivation by scientific researchers, "upgraded" marine microorganisms can degrade some plastics into fragments within two weeks. The "magic power" of marine organisms is far more than degradable plastics. According to the data of the third Institute of Oceanography of the Ministry of natural resources, marine organisms, which account for more than 80% of the global species, are an important source of food, protein and pharmaceutical raw materials. In recent years, China's investment in the field of marine high technology has increased rapidly, and a resource bank containing tens of thousands of new strains of marine microorganisms and new varieties of aquaculture organisms has been built. Ocean transportation: the "natural highway" of international trade The ocean has the reputation of "natural highway", which is irreplaceable in today's prosperous global trade. According to the data of the Ministry of Commerce, among the top 30 container throughput in 2021, China holds 10 seats, and Shanghai Port ranks first in the world. Behind the sophisticated and huge shipping network, big data technology plays an important role. COSCO Shipping Technology big data application platform can achieve real-time tracking effect by superimposing its own algorithm on the collected public shipping location data. Among the four oceans in the world, the Arctic Ocean is one of the regions with the most complicated climate and the most difficult navigation. In 2021, the satellite remote sensing inversion algorithm for seven key parameters of Arctic sea ice and marine dynamic environment established by Chinese researchers was put into application, which significantly improved the commercial competitiveness of Chinese shipping companies sailing in the Arctic. This scientific and technological achievement has also been selected as one of China's top ten marine scientific and technological advances in 2021 by the Chinese society of Oceanography and other organizations. (Xinhua News Agency)