Satellite tracking of 12,000 marine animals reveals ocean giants are in trouble
Virginia Tech joined a global research team that tracked more than 100 species and identified ocean hotspots critical for protecting threatened marine megafauna that fall beyond current conservation zones
- Date:
- June 7, 2025
- Source:
- Virginia Tech
- Summary:
- A massive global collaboration has tracked over 12,000 marine animals from whales to turtles to create one of the most detailed movement maps of ocean giants ever assembled. The project, MegaMove, highlights how animal migrations intersect with fishing, shipping, and pollution, revealing alarming gaps in current ocean protections. Even if 30% of the oceans were protected, most critical habitats would still be exposed to threats.
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A sweeping new study is helping pinpoint where whales, sharks, turtles, and other ocean giants need the most protection and where current efforts fall short.
Led by Ana Sequeira of Australian National University and supported by the United Nations, the research synthesized data from 12,000 satellite-tracked animals across more than 100 species. It reveals how marine megafauna move globally and where their migratory, feeding, and breeding behaviors intersect with human threats such as fishing, shipping, and pollution.
Virginia Tech contributed to the effort, called MegaMove, a massive collaboration of nearly 400 scientists across more than 50 countries. The project used biologging data collected using satellite tags to inform a new blueprint for ocean conservation.
"This is one of the largest marine tracking data sets ever assembled," said Francesco Ferretti, a marine ecologist at Virginia Tech who contributed to the study. "It's not just about drawing lines on a map. We need to understand animal behavior and overlap that with human activity to find the best solutions."
The research was published on June 5 in the journal Science.
From the open ocean to Virginia waters
Though global in scope, the findings hold direct relevance for Virginia and the East Coast.
"Virginia's coastline is part of a major migratory corridor for marine species," Ferretti said. "Sharks, for example, play a critical role in maintaining healthy marine ecosystems, which in turn support fisheries and recreation. What happens to apex predators can ripple across the food web and impact local economies."
Past collapses of shellfish fisheries in North Carolina and impacts on seagrasses meadows, important for fisheries, carbon sequestration, and to prevent coastal erosion, have shown how predator loss can shift entire ecosystems.
Ferretti said understanding these dynamics is critical to protecting both wildlife and the communities that rely on them.
A global conservation puzzle
MegaMove aimed to inform the United Nations' 30x30 target: a global goal to protect 30 percent of the world's oceans by 2030. The team used optimization algorithms to propose which areas should be prioritized for protection based on how marine species use the space.
But the findings show that even if all 30 percent of protected areas were perfectly placed, it wouldn't be enough.
"Sixty percent of the tracked animals' critical habitats would be still outside these zones," Ferretti said. "In addition to protected areas, we need targeted mitigation, changing fishing practices, rerouting shipping lanes, and reducing pollution."
Building global science at Virginia Tech
Virginia Tech's participation to initiatives such as the MegaMove project reflects a broader push to contribute to international, data-driven science.
"This project shows where the field is heading," Ferretti said. "We're seeing a revolution in big data approaches in marine science. Students need to be trained not only in fieldwork but in data science to meet future challenges."
He said global efforts like MegaMove can also help inspire the next generation of researchers and showcase how Virginia Tech connects local talent to worldwide impact.
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Materials provided by Virginia Tech. Note: Content may be edited for style and length.
Journal Reference:
- Ana M. M. Sequeira, Jorge P. Rodríguez, Sarah A. Marley, Hannah J. Calich, Mirjam van der Mheen, Michelle VanCompernolle, Lucy M. Arrowsmith, Lauren R. Peel, Nuno Queiroz, Marisa Vedor, Ivo da Costa, Gonzalo Mucientes, Ana Couto, Nicolas E. Humphries, Sara Abalo-Morla, Francisco J. Abascal, Debra L. Abercrombie, Katya Abrantes, F. Alberto Abreu-Grobois, André S. Afonso, Pedro Afonso, Heidi Ahonen, Susanne Åkesson, Joanna Alfaro-Shigueto, Russel D. Andrews, Frédéric Angelier, Marina Antonopoulou, Javier A. Arata, Gonzalo Araujo, Randall Arauz, José Manuel Arcos, Igor Arregui, Haritz Arrizabalaga, Marie Auger-Méthé, Steffen Bach, Fred Bailleul, Robin W. Baird, George H. Balazs, Susan G. Barco, Adam Barnett, Warren Baverstock, Alastair M. M. Baylis, Annalea Beard, Juan Bécares, Eduardo J. Belda, Ian Bell, Ashley Bennison, Scott R. Benson, Diego Bernal, Michael L. Berumen, Sandra Bessudo, Natalia P. A. Bezerra, Antonin V. Blaison, Gabriela S. Blanco, Barbara A. Block, Mark Bolton, Mark E. Bond, Ramón Bonfil, Camrin D. Braun, Annette C. Broderick, Michael de L. Brooke, Annabelle M. L. Brooks, Edward J. Brooks, Ignacio M. Bruno, Jennifer M. Burns, Michael E. Byrne, Steven E. Campana, Hamish A. Campbell, Richard A. Campbell, Aaron Carlisle, Ruth H. Carmichael, Gemma Carroll, Paolo Casale, Filipe R. Ceia, Demian D. Chapman, Taylor K. Chapple, Jean-Benoit Charrassin, Andre Chiaradia, John Chisholm, Christopher R. Clarke, Thomas A. Clay, Christophe Cleguer, Elizabeth Clingham, Eric E. G. Clua, Jesse E. M. Cochran, Rochelle Constantine, Robert W. Cooper, Estelle Crochelet, Michelle Cronin, Eduardo Cuevas, Kayla P. DaCosta, Laurent Dagorn, Ryan Daly, Randall W. Davis, P. J. Nico de Bruyn, Carlos Delgado-Trejo, Thomas Dellinger, Solène Derville, Stella Diamant, Andrew DiMatteo, Kara L. Dodge, Philip D. Doherty, Michael C. Double, Alistair D. M. Dove, Thomas K Doyle, Michael J. Drew, Lindsay L. Dubbs, Clinton A. J. Duffy, Peter H. Dutton, Ewan W. J. Edwards, Luke D. Einoder, Mark V. Erdmann, Eduardo Espinoza, Nicole Esteban, Ana Isabel Fagundes, Chris Feare, Steven H. Ferguson, Luciana C. Ferreira, Francesco Ferretti, John Filmalter, Brittany Finucci, G. Chris Fischer, Richard J. Fitzpatrick, Jorge Fontes, Angela Formia, Sabrina Fossette, Malcolm P. Francis, Ari S. Friedlaender, Miguel Furtado, Austin J. Gallagher, Claire Garrigue, Enrico Gennari, H. Grant Gilchrist, Brendan J. Godley, Simon D. Goldsworthy, Matthew Gollock, Victoria González Carman, W. James Grecian, Jonathan R. Green, Christophe Guinet, Johan Gustafson, Tristan L. Guttridge, Hector M. Guzman, Derek Hamer, Keith C. Hamer, Neil Hammerschlag, Mike O. Hammill, Luke Harman, Emma Harrison, Catherine E. Hart, A. Errol Harris, Gordon Hastie, Fabio H. V. Hazin, Matt Heard, Alex R. Hearn, Mads Peter Heide-Jørgensen, Leeann Henry, Robert William Henry, Vicente Guzman Hernandez, Arturo E. Herrera, Mark A. Hindell, John C. Holdsworth, Bonnie J. Holmes, Lucy A. Howey, Edgar Mauricio Hoyos Padilla, Luis A. Huckstadt, Robert E. Hueter, Paulo H. Lara, Nigel E. Hussey, Charlie Huveneers, Kevin Hyland, Dylan T. Irion, David M. P. Jacoby, Audrey Jaeger, Mohammed Y. Jaidah, Mark Jessopp, Oliver J. D. Jewell, Ryan Johnson, Carl G. Jones, Ian D. Jonsen, Lance K. B. Jordan, Salvador J. Jorgensen, Akiko Kato, James T. Ketchum, Alexander S. Kitaysky, A. Peter Klimley, Alison A. Kock, Pieter Koen, Felipe Ladino Archila, Fernanda O. Lana, Jude V. Lane, Matthieu Le Corre, Mary-Anne Lea, James Lea, Eliza H. K. Leat, Olivia A. Lee, J. Jacob Levenson, César P. Ley-Quiñonez, Fiona Llewellyn, Gwen Lockhart, Gustave G. Lopez, Milagros Lopez Mendilaharsu, Andrew D. Lowther, Paolo Luschi, Molly E. Lutcavage, Warrick S. Lyon, Bruno C. L. Macena, Alice I. Mackay, Christine A. Madden, Mark L. Mallory, Jeffrey C. Mangel, Michael Manning, Kate L. Mansfield, David March, Adolfo Marco, Marianne Marcoux, David Acuña-Marrero, Helene Marsh, Heather Marshall, Bruce Mate, Jaime D. McAllister, Rebecca L. McGuire, Jane McKenzie, Lachlan McLeay, Clive R. McMahon, Michelle Modest, John Morris, Mônica M. C. Muelbert, Naveen Namboothri, Wallace J. Nichols, Malcolm A. C. Nicoll, Bradley M. Norman, Ken Norris, Erik Olsen, Steffen Oppel, Sabine Orlowski, Anthony M. Pagano, Brad Page, Vitor H. Paiva, Daniel M. Palacios, Yannis P. Papastamatiou, Denise M. Parker, Charitha Pattiaratchi, Hoyt Peckham, Cesar R. Peñaherrera-Palma, Julian G. Pepperell, Richard A. Phillips, Simon J. Pierce, Stephen K. Pikesley, Nicolas J. Pilcher, Patrick Pinet, Matt Pinkerton, Enrico Pirotta, Virginie Plot, Abby N. Powell, Kevin D. Powers, Clare E. M. Prebble, Tiana J. Preston, Rui Prieto, Laura Prosdocimi, John L. Quinn, Lina Maria Quintero, Thierry Raclot, Iván Ramirez, Dení Ramírez-Macías, Jaime A. Ramos, Andrew J. Read, Rolf Ream, ALan F. Rees, Richard D. Reina, Ryan R. Reisinger, Ohiana Revuelta, Samantha D. Reynolds, Anthony J. Richardson, Leena Riekkola, Federico G. Riet-Sapriza, David P. Robinson, Patrick W. Robinson, Carlos F. D. Rocha, Tracey L. Rogers, Christoph A. Rohner, Yan Ropert-Coudert, Monica Ross, David R. L. Rowat, Kevin Ruhomaun, Paul M. Sagar, Melita A. Samoilys, Sonia Sanchez, Alejandra G. Sandoval-Lugo, Erik A. P. dos Santos, António M. Santos, Kylie L. Scales, Gail Schofield, Jayson M. Semmens, Edy Setyawan, Scott A. Shaffer, Kartik Shanker, Marcus Sheaves, George L. Shillinger, Mahmood S. Shivji, Abraham Sianipar, Janet R. D. Silk, Mónica A. Silva, Jolene Sim, Samantha J. Simpson, Gregory Skomal, David J. Slip, Malcolm J. Smale, German A. Soler, Marc Soria, Lara L. Sousa, Emily J. Southall, Jean-Claude Stahl, Kilian M. Stehfest, Jeremy T. Sterling, John D. Stevens, Guy M. W. Stevens, Joshua D. Stewart, Adhith Swaminathan, Akinori Takahashi, Vikash Tatayah, Jean-Baptiste Thiebot, Paul M. Thompson, Simon R. Thorrold, Michele Thums, Jesús Tomás, Leigh G. Torres, Alison Towner, Philip N. Trathan, John P. Tyminski, Ricardo Sagarminaga van Buiten, Robert P. Van Dam, Frederic Vandeperre, Nuria Varo-Cruz, Jeremy J. Vaudo, Michel Vely, Stella Villegas-Amtmann, Cecile Vincent, David Waayers, Sarah Wanless, Yuuki Y. Watanabe, Cortney A. Watt, Sam B. Weber, Nicola Weber, Michael J. Weise, Linda Welch, Randall S. Wells, Jonathan M. Werry, Bradley M. Wetherbee, Timothy D. White, Scott D. Whiting, Andrea U. Whiting, Annelise Wiebkin, Barbara Wienecke, Natalie E. Wildermann, David N. Wiley, Alexis Will, Sean Williams, Marie Windstein, Saskia Wischnewski, Matthew J. Witt, Freya C. Womersley, Andrew G. Wood, Lucy J. Wright, José C. Xavier, Takashi Yamamoto, David J. Yurkowski, Patricia M. Zarate, Alan Zavala-Norzagaray, Alexandre N. Zerbini, Daniel P. Costa, Rob Harcourt, Mark G. Meekan, Graeme C. Hays, David W. Sims, Carlos M. Duarte, Víctor M. Eguíluz. Global tracking of marine megafauna space use reveals how to achieve conservation targets. Science, 2025; 388 (6751): 1086 DOI: 10.1126/science.adl0239
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