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In 1971, the term “marine ranching” first appeared at a conference organised by the Japanese Department of Aquaculture, suggesting a concept for a system of sustainable food production from marine biological resources. In recent years, with the continual development of science and
technology, marine ranching has received considerable attention as a new form of modern marine fishery production, and has so far achieved good results where it has been carried out.
Alluding to the grazing of cattle and sheep on grassland, on a basic level marine ranching can be interpreted as grazing animals such as fish, shrimp and shellfish in the sea. Reef fishing offers a salient example. While reefs readily attract fish, in recent years natural reefs have declined as a result of marine engineering practices and destructive fishing methods. In response, artificial reefs are springing up. In terms of marine ranching, the formation of artificial reefs is a fundamental ecological project.
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