RT Journal Article T1 Fundamental questions in meiofauna research highlight how small but ubiquitous animals can improve our understanding of nature A1 Martínez, Alejandro A1 Bonaglia, Stefano A1 Di Domenico, Maikon A1 Fonseca, Gustavo A1 Ingels, Jeroen A1 Jörger, Katharina M. A1 Laumer, Christopher A1 Leasi, Francesca A1 Zeppilli, Daniela A1 Baldrighi, Elisa A1 Bik, Holly A1 Cepeda, Diego A1 Curini Galletti, Marco A1 Cutter, Asher D. A1 dos Santos, Giovanni A1 Fattorini, Simone A1 Frisch, Dagmar A1 Gollner, Sabine A1 Jondelius, Ulf A1 Kerbl, Alexandra A1 Kocot, Kevin M. A1 Majdi, Nabil A1 Mammola, Stefano A1 Martín Durán, José M. A1 Menegotto, André A1 Montagna, Paul A. A1 Nascimento, Francisco J. A. A1 Puillandre, Nicolas A1 Rognant, Anne A1 Sánchez Santos, Nuria A1 Santos, Isaac R. A1 Schmidt-Rhaesa, Andreas A1 Schratzberger, Michaela A1 Semprucci, Federica A1 Shimabukuro, Mauricio A1 Sommerfield, Paul J. A1 Struck, Torsten H. A1 Sørensen, Martin V. A1 Wallberg, Andreas A1 Worsaae, Katrine A1 Yamasaki, Hiroshi A1 Fontaneto, Diego AB This paper identifies the top-50 priority questions for meiofaunal research, highlighting their critical roles in biogeochemical cycles and biodiversity. It calls for a balanced research agenda, international cooperation, and advances in technology to overcome current challenges and unlock meiofauna’s full potential. PB Nature Research SN 2399-3642 YR 2025 FD 2025-03 LK https://hdl.handle.net/20.500.14352/120222 UL https://hdl.handle.net/20.500.14352/120222 LA eng NO Martínez, A., Bonaglia, S., Di Domenico, M. et al. Fundamental questions in meiofauna research highlight how small but ubiquitous animals can improve our understanding of Nature. Commun Biol 8, 449 (2025). https://doi.org/10.1038/s42003-025-07888-1 NO Acknowledgements:Kevin M. Kocot was funded by NSF DEB-1846174. Dagmar Frisch Deutsche Forschungsgemeinschaft DFG- German Research Foundation) – Project number 461099895. André Menegotto was supported by a “Juan de la Cierva—Formación” fellowship (FJC2020044080-I), funded by MICIU/AEI/10.13039/501100011033 and by “European Union NextGenerationEU/PRTR”. The study received support from the National Recovery and Resilience Plan (NRRP) of the Italian Ministry of University and Research, funded by the European Union—NextGenerationEU, project code CN_00000033, National Biodiversity Future Center—NBFC, CUP B83C22002930006. NO European Commission NO National Science Foundation NO Deutsche Forschungsgemeinschaft NO Ministerio de Ciencia e Innovación (España) NO Agencia Estatal de Investigación (España) NO Ministero dell’Università e della Ricerca (Italia) NO National Biodiversity Future Center (Italia) DS Docta Complutense RD 26 dic 2025