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Rivfarer is a device aimed at curbing illegal fishing under the Yangtze River's 10-year Fishing Ban Policy. Ground cage nets are also called sterilization nets flooding in Yangtze River. Aquatic organisms cannot escape causing suffocation.
The ground cage net is cast underwater and hidden; the cast behavior is hard to discover, and difficult for the police to prohibit the illegal act and clean.
Rivfarer uses underwater cameras to identify fishing net images helping police to find underwater nets quickly; underwater cameras identify illegal fishing behaviors to prevent them. Through data analysis to strengthen patrols in significant areas.