fishing boats on the ocean horizon at sunset

Ending Illegal Fishing 


Meet the Team

Peter Horn

Project Director

Peter Horn directs Pew’s work on ending illegal fishing, bringing together policy, technology, and enforcement initiatives to legislate against this practice and prevent or stop it at sea. 

Full Bio ›

Dawn Borg Costanzi

Senior Officer

Dawn Borg Costanzi supports Pew’s international fisheries project by helping regional stakeholders coordinate their efforts with the aim of deterring illegal, unreported, and unregulated fishing. In doing so, she works with states and external partners to foster collaboration, adopt robust policies, facilitate the exchange of information, and enhance collective capacity for effective enforcement and compliance.

Full Bio ›

Daniel Schaeffer

Senior Manager

Daniel Schaeffer leads Pew’s work on maritime security and military engagement by addressing illegal fishing where it intersects with other maritime crimes. He also focuses on identifying better ways to address maritime security through enforcement of fisheries and ensuring effective maritime governance and the rule of law.

Full Bio ›

Katherine Hanly


Katherine Hanly is a policy manager for Pew’s ending illegal fishing project, bringing together policy, technology, and enforcement initiatives to combat illegal, unreported, and unregulated fishing and prevent it at sea.

Before joining Pew, Hanly worked on conservation and international fisheries, United Nations conventions, regional fisheries management agreements, public affairs, and government relations. She served as executive director of the Anna Lindh Foundation in Stockholm, where she worked to advance the ideas and legacy of the former foreign minister throughout the international diplomatic and political community, nongovernmental organizations, think tanks, and academia.

Hanly holds a bachelor’s degree in political science from the State University of New York, Plattsburgh.

Alyson Kauffman

Senior Associate

Alyson Kauffman is a senior associate with Pew’s international fisheries team, focusing on ending illegal, unreported, and unregulated fishing. Since joining the campaign, she has worked on reforming transshipment and improving fisheries enforcement through the analysis of Automatic Identification Systems data. She also leads Pew’s work with Global Fishing Watch on developing a portal to visualize and analyze carrier vessel activity in the five global tuna regional fisheries management organizations.

Her background is in biophysical oceanography. Before joining Pew, she worked as a fisheries oceanographer for eight years.

Kauffman holds a bachelor’s degree in environmental science with a focus in oceanography from the University of North Carolina, Wilmington.

Tahiana Vargas Fajardo

Senior Associate

Tahiana Fajardo is a senior associate with Pew’s international fisheries project and works with governments, enforcement authorities, and the seafood industry to support the adoption and implementation of regulations and policies to prevent and deter illegal, unreported, and unregulated fishing. She leads the campaign’s efforts on flag states’ responsibilities for their fishing vessels and coordinates the campaign’s policy work in Latin America, with special focus on the International Maritime Organization’s Cape Town Agreement for the Safety of Fishing Vessels and the United Nations Food and Agriculture Organization’s 2009 Port State Measures Agreement.

Before joining Pew, Fajardo worked for over six years for the National Authority of Maritime Affairs of the Dominican Republic, where she served as legal officer, providing counsel on a wide range of subjects, drafting legislation to implement international law, and representing the government in international forums.

Fajardo holds a bachelor’s degree in law and a master's degree in public international law from the University Paris II of France and Master of Laws in international maritime law from the IMO-International Maritime University in Malta.

Nikolas Evangelides

Principal Associate

Nikolas Evangelides is a principal associate with the ending illegal fishing team, working mainly on European Union engagement and Brussels-based nongovernmental organization partnerships.

Before coming to Pew, Evangelides developed expertise on the EU and international relations. His recent roles included working with the Ministry of Foreign Affairs of the Republic of Cyprus, where, among other responsibilities, he served as the desk officer for North Africa, the League of Arab States, and the Arab Spring. Evangelides later worked as a political, press, and information attaché with the EU’s Delegation for the Pacific in Suva, Fiji, covering 14 island countries and territories. He then moved to the EU delegation to New Zealand in Wellington, where he worked as political officer and held the EU-New Zealand Pacific Partnership dossier.

He has a degree in international and European studies from the Panteion University of Social and Political Sciences in Athens, Greece, and a master’s degree in international relations (Middle East) from Durham University in the United Kingdom.

Gina Fiore

Senior Associate

Gina Fiore is a senior associate with the ending illegal fishing project. She manages projects related to illegal fishing and convergence crimes and acts as a liaison between Pew and the military and national security communities.

Before joining Pew, she worked for Booz Allen Hamilton, managing illegal fishing and information-sharing projects for the U.S. Navy’s Executive Agent for Maritime Domain Awareness. She also spent five years as a staff officer with the U.S. Department of Defense.

She has bachelor’s degrees in history and political science from the State University of New York at Stony Brook and master’s degrees in history and political science from the New School for Social Research.