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Daniel Suddaby

Member, ISSF Environmental Stakeholder Committee & Executive Director, Global Tuna Alliance (GTA)


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Mary Sestric
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With 20 years of experience in fisheries and marine conservation, Daniel Suddaby is an expert in tuna, advocacy, and sustainable market tools that drive change in fisheries and seafood supply chains. In May 2023, he was named Executive Director for the Global Tuna Alliance (GTA), where he is responsible for providing strategic leadership, driving the organization’s mission, and managing a growing team.

Prior to joining the GTA, Mr. Suddaby founded and led the Tuna and Distant Water Fisheries Program at Ocean Outcomes, building effective relationships with longline tuna and supply chain companies to incentivize transformation through tools such as Marine Stewardship Council (MSC) Fishery Improvement Projects.

Previously, he spent six years as the Deputy Leader of the WWF global fisheries initiative, leading global engagement in tuna fisheries and advocacy in all Regional Fisheries Management Organizations (RFMOs), and providing strategic direction to WWF International on seafood engagement. He also has experience as a Senior Fisheries Certification Manager for the MSC.

Mr. Suddaby has a master’s degree in Conservation from University College London, University of London.