Assessing IUU Fishing in Southeast Asia

Findings, resources, and recommendations for countering maritime security risks in the South China Sea and Sulu-Sulawesi Seascape

Illegal, unreported, and unregulated (IUU) fishing threatens marine ecosystems, food security, and regional stability in Southeast Asia. Driven by rapid economic growth in ASEAN member states and surging global demand, fish stocks are being pushed to the brink of collapse. Compounding the challenge, maritime boundary disputes in contested waters and transnational criminal networks hinder the effective regulation of marine resources. The clandestine nature of at-sea activities further obscures the full scope, geographic distribution, drivers, and consequences of IUU fishing.

To equip policymakers with actionable insights, the Stimson Center developed a data-driven IUU Fishing Risk Assessment framework, adapted from the Environmental Security Program’s Climate and Ocean Risk Vulnerability Initiative (CORVI). This methodology evaluates key economic, environmental, and governance risk factors, enabling targeted interventions in high-risk areas. The findings and resources of this project not only illuminate the scale and impact of IUU fishing but also provide practical policy recommendations to enhance maritime security and promote sustainable fisheries management across the region.

Project Team
Project Advisor
Project Manager
Research
Data Lead

Research & Writing

Explainer
Militarized fishing fleets and territorial competition are destroying the South China Sea's ecosystems and threatening global supply chains
Madelyn MacMurray • Carolyn Gruber
Data Tool
An interactive dashboard assessing risk of illegal, unreported, and unregulated (IUU) fishing in Southeast Asia
Noah Fritzhand • Regan Kwan • Madelyn MacMurray...
Policy Memo
This policy roadmap report provides guidance on how to address needs and gaps in combating IUU fishing in Southeast Asia
Madelyn MacMurray • Brian Eyler
Report
Assessing the governmental, environmental, and economic drivers of IUU fishing and maritime security threats in the Sulu-Sulawesi Seascape
Madelyn MacMurray • Lily Schlieman • Regan Kwan...
Report
Assessing the governmental, environmental, and economic drivers of IUU fishing and maritime security threats in the South China Sea
Madelyn MacMurray • Lily Schlieman • Regan Kwan...