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Illegal, Unreported and Unregulated Fishing

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Below is a curated reading list of recommended tools, data sources, and literature regarding IUU Fishing. For our broader extensive catalog of IUU fishing resources please visit repository using the button to the right.
Apr 17, 2026Quarterly IUU Fishing Insights (Caribbean Focus): January–March 2026: Illegal, unreported, and unregulated (IUU) fishing activity in the Caribbean region during the January–March 2026 quarter was concentrated along the southern and eastern Caribbean, with hotspots in Trinidad and Tobago, Guyana, Suriname, French Guiana, and Martinique. Venezuelan-flagged vessels dominated detected fishing operations, with over half operating outside Venezuelan waters, primarily in the EEZs of Guyana, Suriname, and Trinidad and Tobago. Dark activity by Venezuelan fishing vessels surged in November 2025 and again in March 2026, concentrated along the Guianas shelf — a corridor with documented overlap between IUU fishing and narcotics trafficking. Open-source intelligence links some Venezuelan-flagged activity to Chinese interests, including industrial-scale shark finning operations using Chinese-crewed vessels flying Venezuelan flags. A likely Taiwanese distant-water fleet (the CHUNG KUO vessels) was detected operating in Guyana and Suriname under Panama and Belize flags of convenience, with high IUU risk ratings and forced labor indicators. Panama emerged as a key convergence point for at-sea transshipment and refueling activity, enabling potential fish laundering outside port oversight. Vessels of interest include the high-IUU-risk CAYO CRASQUI, the Russian-flagged NOVAYA ZEMLYA, and the cargo vessel ADELAIDE, beneficially owned by a subsidiary of China Construction Bank.

Sabrina Dineshkumar, Tanvi Dani FIU Institutional Repository

Feb 13, 2026Quarterly IUU Fishing Insights #3: October–December 2025: Illegal, unreported, and unregulated (IUU) fishing activity in the U.S. Southern Command (SOUTHCOM) Area of Responsibility during the October–December 2025 quarter remained concentrated along high seas areas adjacent to the Exclusive Economic Zones (EEZs) of Peru, Ecuador, and Argentina, with additional activity near the Galápagos Islands, Rapa Nui, and offshore Brazil. Fishing effort in the Southeast Pacific declined compared to the previous quarter, while activity increased in the South Atlantic, reflecting seasonal movement of distant-water squid fleets. Chinese-flagged vessels conducted the majority of observed fishing operations. Ship-to-ship meetings were most concentrated in the South Atlantic near Uruguay’s EEZ, the Falkland Islands, and Brazilian waters, with the tanker OCEAN ACE recording the highest number of interactions. Dark activity, indicated by AIS transmission gaps, frequently occurred near EEZ boundaries and overlapped with fishing and transshipment hotspots. These patterns highlight persistent monitoring challenges and reinforce the need for continued analysis of vessel behavior and maritime risk indicators in the region.

Sabrina Dineshkumar, Tanvi Dani FIU Institutional Repository

Jul 31, 2025IUU Fishing Dashboard Quarterly Report (Panama Focus): 25 IUU-linked ship-to-ship (STS) meetings in the past nine months occurred near Panama City, where dense maritime traffic can provide cover for illicit transfers. 25 STS meetings and 4 dark activities were detected in or close to Panama’s EEZ (Dec 2024–Sep 2025). Panama-flagged vessels dominated, followed by Venezuela and Liberia, both common “flags of convenience.” One dark event lasted eight days inside a marine protected area. Open registries in Panama and Liberia can be exploited for low fees and weak oversight, allowing fleets to obscure ownership, evade sanctions, and blend illicit operations with legitimate traffic. The Canal’s vessel density and weak registry transparency enable illicit actors to operate in plain sight. Dark activity in MPAs undermines both enforcement and environmental protection. Dashboard analysis suggests Panama’s EEZ is being used as a logistics hub for high-risk vessels.

Sabrina Dineshkumar, Tanvi Dani FIU Institutional Repository

Jul 31, 2025IUU Fishing Dashboard Quarterly Report #1 (April - June 2025): From April to June 2025, fishing activity in the SOUTHCOM AOR was focused near the Exclusive Economic Zones (EEZ) of Peru, Ecuador, and Argentina, driven by productive ocean currents. High volumes of ship-to-ship (STS) meetings and dark activity were observed, especially near EEZ boundaries and Marine Protected Areas (MPAs). Chinese-flagged vessels dominated the activity, with tens of thousands of fishing events. Three fishing vessels, the GALOPIN_, IKER 1, and PINGTAINRONG678#10, exhibited strong behavioral indicators for Illegal, Unreported, and Unregulated (IUU) fishing practices, particularly prolonged dark activity near EEZs (when AIS is intentionally switched off). The LU RONG YUAN YU fleet, comprising vessels like LU RONG YUAN YU 979, 978, and 977, also conducted numerous fishing operations and were flagged by Windward risk models for IUU practices, including dark activity, suspected forced labor, and transshipments.

Sabrina Dineshkumar, Tanvi Dani FIU Institutional Repository

Nov 10, 2025IUU Fishing Dashboard Quarterly Report #2 (July- September 2025): From July-September 2025, fishing activity in the SOUTHCOM AOR concentrated along the high seas adjacent to the EEZs of Peru, Ecuador, and Argentina, with additional clusters near the Galápagos Islands and Rapa Nui. High levels of ship-to-ship (STS) meetings and dark activity were observed in these areas, some overlapping with known Marine Protected Areas (MPAs). Chinese-flagged vessels accounted for the large majority of activities. Three fishing vessels, SHUN ZE 729 , HANYI 18 , and HANYI 19 , exhibited strong behavioral indicators for Illegal, Unreported, and Unregulated (IUU) fishing practices, including dark activity, forced labor, and transshipments. The FU YANG 1 and FU YANG 3 , both Vanuatu-flagged but Chinese-owned, also displayed high-risk behaviors near Argentina’s EEZ.

Sabrina Dineshkumar, Tanvi Dani FIU Institutional Repository

Oct 3, 2025Global Record of Fishing Vessels, Refrigerated Transport Vessels and Supply Vessels: The Global Record of Fishing Vessels, Refrigerated Transport Vessels and Supply Vessels (Global Record) is a phased and collaborative global initiative to make available, in a rapid way, certified data from State authorities about vessels and vessel-related activities. The programme aims towards providing a single access point for information on vessels used for fishing and fishing-related activities with the primary objective being to combat illegal, unreported and unregulated (IUU) fishing by enhancing transparency and traceability. The programme’s long-term goals are to strengthen the fisheries’ sector in terms of management and its sustainability, to enhance food security and the livelihoods of populations depending on fisheries including rural coastal populations.

Food and Agriculture Organization (FAO) of the United Nations Global Record of Fishing Vessels, Refrigerated Transport Vessels and Supply Vessels

Dec 1, 2023IUU Fishing Risk Index: The IUU Fishing Risk Index provides a measure of the likelihood that states are exposed to and effectively combat IUU fishing. The Index provides an IUU fishing risk score for all coastal states of between 1 and 5 (1 being the best, and 5 the worst). The Index allows countries to be benchmarked and ranked, and assessed for their vulnerability, prevalence and response to IUU fishing.

On the basis of its diverse indicators, the Index provides a measure of the risk of IUU fishing in and by different countries. The Index cannot be used as the basis for computing the incidence of IUU fishing in individual countries, or perpetration of IUU fishing by given fleets. It merely identifies areas of better and poorer state performance, and associated domains of higher and lower IUU risks.

The Index has been developed by Poseidon Aquatic Resource Management Ltd., a fisheries and aquaculture consultancy company working globally, and the Global Initiative Against Transnational Organized Crime, a Geneva-based NGO network of experts working on human rights, democracy, governance, and development issues where organized crime has become increasingly pertinent.

Poseidon Aquatic Resource Management Ltd. IUU Fishing Risk Index

Jan 1, 2025Bait-to-Plate: An interactive tool tracing seafood from ships and processing plants to downstream brands and consumers, including what is known about possible crimes or other types of concerns within these supply chains.

The Outlaw Ocean Project Bait-to-Plate

Jul 17, 2025Skylight: Skylight visualizes what’s happening at sea to enhance decision-making and exploration using state-of-the-art AI built in-house by our team and collaborators at Ai2. Focusing heavily on our enforcement and compliance community, Skylight delivers its information with minimal delay to improve situational awareness and decision-making.

Skylight’s technology is free to government, regional, and nongovernmental organizations worldwide that work to protect our seas from illegal fishing and other maritime crimes.

AI2 Skylight

Jul 17, 2025U.S. Office of Foreign Assets Control (OFAC) Sanctions List Search Tool: The Sanctions List Search tool uses approximate string matching to identify possible matches between word or character strings as entered into Sanctions List Search, and any name or name component as it appears on the U.S. Specially Designated Nationals (SDN) and Blocked Persons List and/or the various other sanctions lists. Sanctions List Search has a slider-bar that may be used to set a threshold (i.e., a confidence rating) for the closeness of any potential match returned as a result of a user's search.

OFAC, Department of Treasury OFAC Sanctions Search Tool

Jul 17, 2025Sanctions Explorer: With Sanctions Explorer, you can access the Search page to quickly discover current and formerly sanctioned entities across all three international major sanctioning authorities. You can also create custom search parameters to more quickly find the information you need, then export that information in a structured format or use the Analytics page to see trends over time, such as how many SDNTK designations were added (or removed) between 1994 and 2020.

C4ADS Sanctions Explorer (C4ADS)

USDA - Foreign Agricultural Service Reports on International Fish and Seafood Industry: U.S. government reports on international trade regarding fisheries trade and commodities.

United States Department of Agriculture USDA Foreign Agricultural Service Reports

China's Global Fishing Offensive: Over the past several years, China has consolidated its position as the world’s leading actor in illegal, unreported, and unregulated (IUU) fishing through the expansion of its distant-water fishing (DWF) fleet, which is estimated to number in the thousands and accounts for a significant share of global fishing activity. Operating across the waters of dozens of countries, this fleet is supported by an extensive logistical network that enables prolonged deployments far from Chinese territory and often beyond effective enforcement mechanisms.

China’s fishing activities are not purely commercial but are closely tied to broader state strategy. The DWF fleet functions as an extension of Beijing’s “Maritime Great Power” ambitions, integrating state subsidies, overseas infrastructure, and coordinated vessel movements to advance geopolitical objectives. This includes leveraging fishing presence to assert influence in contested or strategically important regions, while maintaining flexibility to scale operations in response to diplomatic conditions.

The consequences of this model are substantial. Developing regions, particularly in Africa and Latin America, face significant economic losses, environmental degradation, and pressure on local food security. At the same time, global seafood supply chains have become increasingly dependent on Chinese production. This report argues that China’s IUU fishing practices represent a systemic, state-directed challenge rather than isolated violations. Addressing this issue will require a shift in policy approaches, as existing regulatory frameworks are insufficient to counter a centrally coordinated and heavily subsidized global fishing enterprise.

The Select Committee on the Strategic Competition Between The United States and The Chinese Communist Party

Jan 9, 2026Combating IUU Fishing in the South American Pacific: An Opportunity to Counter Chinese Influence Closer to Home: Over the past decade, China’s distant-water fishing (DWF) fleet has emerged as a central driver of illegal, unreported, and unregulated (IUU) fishing in the South American Pacific, generating both economic and security challenges for the region. Incidents involving Chinese vessels, ranging from incursions into exclusive economic zones to confrontations with regional coast guards, highlight the scale and persistence of these activities. What began as a response to domestic resource depletion has evolved into a large, industrialized fishing presence that operates for extended periods at sea and often skirts international regulations.

China’s expanding footprint in South America, driven by trade, infrastructure investment, and broader political engagement, has amplified concerns about its maritime behavior. IUU fishing alone has imposed billions of dollars in economic losses on the region, threatening fisheries, local livelihoods, and ecological sustainability. Despite efforts by countries such as Chile, Ecuador, and Peru to improve surveillance and enforcement, resource and capacity limitations continue to hinder effective responses.

This report argues that combating IUU fishing presents a strategic opportunity for the United States to strengthen its leadership in the Western Hemisphere while countering China’s growing influence. However, success depends on (1) improving regulatory clarity through regional fisheries organizations and (2) expanding multinational cooperation, including training and joint operations.

Alexander Goodno National Defense University Press

Dec 4, 2025China and LAC at Odds: Blue Diplomacy in the Era of IUU Fishing: China has positioned itself as a global leader in climate diplomacy, particularly in its engagement with the Global South, where Latin American and Caribbean (LAC) countries play an increasingly important role in shaping climate negotiations and energy transition efforts. Through investments in renewable energy, critical minerals, and green technology, Beijing has sought to align itself with development priorities in the region. However, this narrative is complicated by tensions in the maritime domain, where China’s distant-water fishing activities have generated friction with LAC states.

Over the past decade, the expansion of Chinese fishing fleets along the Pacific coasts of countries such as Ecuador, Peru, Chile, and Colombia has become a persistent challenge, impacting marine ecosystems, local economies, and national sovereignty. While some governments have taken direct action, deploying naval forces, strengthening regulations, or restricting port access, others have attempted to balance enforcement with maintaining strong economic ties to Beijing. These responses highlight a broader regional trend: even countries deepening cooperation with China are increasingly unwilling to tolerate IUU fishing practices.

This report argues that China’s engagement in Latin America faces a growing contradiction between its climate leadership and its maritime behavior. While Beijing promotes sustainability and green development, its fishing practices undermine these claims, creating reputational and geopolitical risks. As regional coordination against IUU fishing strengthens, China may be forced to reconcile these competing dynamics or risk eroding its influence in the Global South.

Alonso Illeuca China Global South Project

Jun 20, 2025Identifying and explaining the distribution of Chinese-Affiliated Ports around the world: A case control design: Chinese investment in port infrastructure has expanded significantly worldwide, raising concerns about its broader geopolitical and economic implications. This exploratory study, the first of its kind to build a global database of Chinese-affiliated ports, examines these investments through the lens of security and economic instability. Using a case-control design and data from 133 countries, we analyze why certain countries have been selected for Chinese port investments while others have not. Our findings suggest that investment decisions are shaped by a combination of strategic, economic, and political factors, with ports in piracy prone regions and economically vulnerable countries more likely to receive investment. By modeling the sub-themes of security and economic instability, this study provides a nuanced understanding of China's port investments and their implications for global maritime policy . Specifically, we recommend that host countries adopt stronger regulatory frameworks and diversify their foreign investments to mitigate security risks and economic dependencies linked to Chinese-affiliated ports.

M. Dylan Spencer, Emilie Christiansen, Stephen F. Pires, Chi-Heng Tsai, Ulhas Gondhali, Gohar Petrossian Science Direct

Aug 1, 2023Report to Congress on Improving International Fisheries Management: NOAA Fisheries' biennial report to Congress identifies nations and entities that the United States will work with to address IUU fishing and forced labor activities, and to support effective management of protected species and shark catch.

NOAA Fisheries Report on IUU Fishing, Bycatch, and Shark Catch

Aug 4, 2024China: The Superpower of Seafood: A comprehensive journalistic investigation of China's fishing fleet's sanctions and human rights violations, role in the global market, and violations of international norms.

The Outlaw Ocean Project China The Superpower of Seafood

Jun 3, 2025Keeping the Lights On: Uncovering the Networks Enabling the Distant Water Squid Fleet: New C4ADS analysis charts an extensive network of onshore and offshore support systems that enable illicit distant-water squid fishing operations, helping malign actors evade and exploit enforcement from regulatory agencies targeting perpetrators of illegal, unreported, and unregulated (IUU) fishing.

Sara Nix C4ADS: Keeping the Lights On Report

May 23, 2025Off The NASDAQ, Still On The High Seas Pingtan Marine Enterprise Two Years Later: In this update to their 2022 Net Worth report, C4ADS charts how Pingtan Marine Enterprise and Fuzhou Honglong Ocean Fishing entities have fared in the face of Western sanctions and enforcement actions — finding that they have largely continued to operate with minimal disruption and, in some cases, expanding operations.

C4ADS C4ADS: Off The NASDAQ, Still On The High Seas Pingtan Marine Enterprise Two Years Later

Oct 8, 2024Illegal, Unreported, and Unregulated (IUU) Fishing: Frequently Asked Questions: Congressional Research Service (CRS) primer structured as a Q&A document that addresses 14 key questions about Illegal, Unreported, and Unregulated (IUU) fishing. Its purpose is to provide Congress and stakeholders with accessible background, definitions, current U.S. policies, international frameworks, challenges, and policy options related to IUU fishing.

Caitlin Keating-Bitonti, Anthony R. Marshak Congressional Research Service