Monitoring the world’s fishing fleets for labor abuse and illegal fishing can be as challenging as the oceans are vast, but new data could help companies and countries intervene more effectively. A Stanford University-led paper published April 5 in Nature Communications identifies the regions and ports at highest risk for labor abuse and illegal fishing and indicates two main risk factors: the country that a vessel is registered to, also known as its “flag state,” and the type of fishing gear the vessel carries onboard. The results offer policymakers and regulators a set of vessel characteristics and regions to pay more attention to when sourcing seafood.

“Surveillance on the high seas is innately challenging, so these data provide a critical first step in helping stakeholders understand where to look deeper,” said lead author Elizabeth Selig, deputy director of the Stanford Center for Ocean Solutions. “We hope these findings can help to inform strategically expanded enforcement, focus development aid investments and increase traceability, ultimately lowering the chance that seafood associated with labor abuse or illegal fishing makes its way to market.”

Using an online survey of experts, the researchers also found that labor abuse and illegal, unreported and unregulated (IUU) fishing are globally pervasive: Of more than 750 ports assessed around the world, more than half are associated with risk of one or both practices. However, in addition to revealing the global extent of these risks, the study also highlights potential pathways to reduce these risks through actions at port that detect and respond to labor abuse and deter the landing of illegally caught fish…