An important supporting detail can be seen in the sentence "The costs of illegal fishing are significant, with the value of pirate fish products estimated at between $10-$23.5 billion annually."
The main statement of the text is that illegal fishing is harmful to the environment, in addition to being a system that promotes the economic loss of the fishing sector, promoting losses of billions of dollars. The sentence that calculates the economical loss is a very important supporting detail, as it shows real data and proves the claim.
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