Featured News
IUU Fishing, Facts, and Fisheries Management
Setting the Record Straight on IUU Fishing in the Western and Central Pacific
Illegal, unreported, and unregulated (IUU) fishing remains a significant concern in global fisheries, including in the Western and Central Pacific Ocean. In a new blog, Dr. John Hampton examines available data and fisheries management information to provide context on IUU fishing estimates and their interpretation. The blog explores how IUU fishing is assessed, the role of regional management measures, and why accurate use of fisheries data is important to informed discussions about tuna sustainability.
Featured Content
Three Oceans, Five Systems, One Shared Challenge: Strengthening Tuna At-Sea Transshipment Governance
Comparing Transshipment Rules Across Tuna RFMOs
At-sea transshipment remains an important operational practice in many tuna fisheries, but oversight requirements differ across oceans and regional fisheries management organizations. This blog reviews how the five tuna RFMOs regulate at-sea transshipment and highlights recent progress toward stronger monitoring, reporting, and transparency measures. It also identifies opportunities to improve consistency and strengthen governance across tuna fisheries worldwide.
Featured Resource
Transparency Tools for Tuna Fisheries
Accessible Information on Vessel Practices and Sustainability Initiatives
ISSF’s ProActive Vessel Register (PVR) and Vessels in Other Sustainability Initiatives (VOSI) help support transparency across global tuna fisheries by providing public access to independently audited vessel-level sustainability information.
At the end of 2025, the PVR listed an all-time-high 1,839 vessels — representing approximately 83% of large-scale tropical tuna purse-seine fishing vessel hold capacity globally. VOSI also reached more than 1,200 vessel registrations, reflecting expanded tracking of vessel best practices across fleets. The PVR includes vessels audited on their compliance with select sustainability measures directly linked to ISSF conservation measures. VOSI complements the PVR by providing visibility into additional vessel practices and sustainability initiatives beyond compliance requirements reflected on the PVR.
Together, these tools help provide stakeholders with verified, accessible information on vessel-level sustainability practices across global tuna fisheries.
ISSF in the News
ISSF’s PVR and VOSI programs turning data into value for tuna supply chains
Seafood Source
IOTC commits to reducing yellowfin tuna catch over time, advances monitoring measures
Seafood Source
ISSF Welcomes Progress But Highlights Gaps After IOTC Meeting
The Fishing Daily
Nina Rosen Joins ISSF Environmental Stakeholder Committee
Fish Focus
