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A bow-mounted trawl can exploit only surface swarms of krill up to a depth of about eight metres. In the 1970s, the krill fishery expanded drastically and began to use also one- or two-boat seines, which can catch swarms as deep as 150 m (490 ft). A peak in the krill production was reached in 1992 with over 100,000 tonnes.
Over 60% by weight of all crustaceans caught for consumption are shrimp and prawns, and nearly 80% is produced in Asia, with China alone producing nearly half the world's total. [74] Non-decapod crustaceans are not widely consumed, with only 118,000 tons of krill being caught, [ 74 ] despite krill having one of the greatest biomasses on the planet.
In addition, 1.3 million tons of aquatic plants (seaweed etc.) were captured in wild fisheries and 14.8 million tons were produced by aquaculture. [2] The number of individual fish caught in the wild has been estimated at 0.97-2.7 trillion per year (not counting fish farms or marine invertebrates).
Researchers from the University of Strathclyde, WWF and the British Antarctic Survey (BAS) are developing a new way to use satellites to work out how many krill are in the ocean around Antarctica.
Since 2002, China has been the world largest exporter of fish and fish products. In 2005, exports, including aquatic plants, were valued at US$7.7 billion, with Japan, the United States and the Republic of Korea as the main markets. In 2005, China was sixth largest importer of fish and fish products in the world, with imports totalling US$4.0 ...
Mushroom cloud from China's first nuclear test, Project 596. China tested its first nuclear weapon device ("596") in 1964 at the Lop Nur test site. The weapon was developed as a deterrent against both the United States and the Soviet Union. Two years later, China had a fission bomb capable of being put onto a nuclear missile.
In 2010, China accounted for 60% of global aquaculture production (by volume) and had ~14 million people (26% of the world total) engaged as fishers and fish farmers (FAO). In 2009, China produced approximately 21 million metric tons (MTs) of freshwater fish or 48% of global output, and 5.3 million MTs of crustaceans or 49% of global output. [10]
Krill (Euphausiids) [1] (sg.: krill) are small and exclusively marine crustaceans of the order Euphausiacea, found in all of the world's oceans. [2] The name "krill" comes from the Norwegian word krill , meaning "small fry of fish", [ 3 ] which is also often attributed to species of fish.
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