Beifang in the fishery those fish and other sea animals, which become imprisoned with the net or other mass catch devices, not however the original catch goal are called. The Beifang is partially used, thrown mostly however as waste regarded again over board. Frequently the animals do not survive this.
Estimations of Greenpeace proceed world-wide from 39 million tons of Beifang annually. Among them are 650,000 seals and whales. A possibility the Beifang to reduce are acoustic signal generators.
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