WASHINGTON — The craze for sushi has fueled a black market in tuna worth billions of dollars, as governments collaborate with the industry despite fears for the species’ survival, an investigation found. A seven-month probe by the International Consortium of Investigative Journalists found that fishermen have willfully violated official quotas in order to supply the lucrative tuna market, which is dominated by Japan. The investigation covered 10 nations but found particular violations in France,...
