Dear MARMAM community, On behalf of the Editorial board of the Latin American Journal of Aquatic Mammals (LAJAM), led by our Editor-in-Chief Dr. Miriam Marmontiel and our Managing Editor Dr. Daniel González-Socoloske, I would like to announce the publication of a Special Issue for the 20th anniversary of the Journal. As many of you may already know, LAJAM is an open access peer-reviewed scientific electronic journal that publishes articles on research, management and conservation biology of aquatic mammals in Latin America. To celebrate our 20-year milestone, a new special issue of the journal was conceived with the idea of publishing a series of review papers focusing on major topics related to the aquatic mammals of Latin America. A call for proposals was sent to aquatic mammal scientists that work in the area. We received over 30 proposals, which were carefully reviewed and the authors of 15 of these proposals were invited to submit reviews. The Editor-in-Chief along with four associate editors (Nataly Castelblanco-Martinez, Daniel Gonzalez-Socoloske, Carolina Loch, and Aldo S. Pacheco) were selected as guest editors for this special issue. In the end, 10 review articles passed the peer-review process, and these are: Huesca-Domínguez, I., Morteo, E., Hernández-Candelario, I., Delfín-Alfonso, C. A., Abarca-Arenas, L. G., Marmontel, M., & Palacios, D.M. (2023). Two decades of the Latin American Journal of Aquatic Mammals (LAJAM): A bibliometric review for the period 2002 – 2022. Latin American Journal of Aquatic Mammals, 18(1), 5-20. https://doi.org/10.5597/lajam00294 Borobia, M., Vail, C., Pusineri, C., & Conruyt, G. (2023). Review of threats and implementation of the Regional Action Plan for the Conservation of Marine Mammals in the Wider Caribbean Region. Latin American Journal of Aquatic Mammals, 18(1), 21-38. https://doi.org/10.5597/lajam00300 Escobar-Lazcano, M. J., Morteo, E., Delfin-Alfonso, C. A., Hernández-Candelario, I. C., & Abarca-Arenas, L. G. (2023). Trends and gaps in marine mammal research from Mexico during 1998 - 2021. Latin American Journal of Aquatic Mammals, 18(1), 39-49. https://doi.org/10.5597/lajam00299 Viglino, M., Valenzuela-Toro, A. M., Benites-Palomino, A., Hernández-Cisneros, A. E., Gutstein, C. S., Aguirre-Fernández, G., Vélez-Juarbe, J., Cozzuol, M. A., Buono, M. R., & Loch, C. (2023). Aquatic mammal fossils in Latin America – a review of records, advances and challenges in research in the last 30 years. Latin American Journal of Aquatic Mammals, 18(1), 50-65. https://doi.org/10.5597/lajam00295 Loizaga, R., Caballero, S., Cunha, H. A., Gravena, W., Herrerra-Trujillo, O., Lopes, F., Milmann, L., Ott, P. H., Pérez-Alvarez, M. J., Túnez, J. I., Durante, C. A., & Oliveira, L. R. (2023). South American aquatic mammals: an overview of 20 years focusing on molecular techniques applied to conservation. Latin American Journal of Aquatic Mammals, 18(1), 66-95. https://doi.org/10.5597/lajam00303 Chávez-Andrade, M., de la Cueva, H., Luévano-Esparza, J., & Lavín Murcio, P. A. (2023). Contributions of bioacoustics to the scientific knowledge of marine mammals in Latin America.Latin American Journal of Aquatic Mammals, 18(1), 96-113. https://doi.org/10.5597/lajam00302 Gonzalez-Socoloske, D., & Olivera-Gómez, L. D. (2023). Seeing in the dark: A review of the use of side-scan sonar to detect and study manatees, with an emphasis on Latin America. Latin American Journal of Aquatic Mammals, 18(1), 114-124. https://doi.org/10.5597/lajam00301 Amaral, R. S., Marmontel, M., Souza, D. A., Carvalho, C. C., Valdevino, G. C. M., Guterres-Pazin, M. G., Mello, D. M. D., Lima, D. S., Chávez-Pérez, H. I., & da Silva, V. M. F. (2023). Advances in the knowledge of the biology and conservation of the Amazonian manatee (Trichechus inunguis). Latin American Journal of Aquatic Mammals, 18(1), 125-138. https://doi.org/10.5597/lajam00296da Silva, V. M. F., Brum, S. M., Mello, D. M. D., Amaral, R. S., Gravena, W., Campbell, E., Gonçalves, R. S., & Mintzer, V. J. (2023). The Amazon River dolphin, Inia geoffrensis: What have we learned in the last two decades of research? Latin American Journal of Aquatic Mammals, 18(1), 139-157. https://doi.org/10.5597/lajam00298 Castelblanco-Martínez, D. N., Gonzalez-Socoloske, D., Cabrias, L., Garcés-Cuartas, N., Arévalo-González, G. K., Borges, J. C. G., & Marmontel, M. (2023). Accomplishments and challenges of research on the Antillean manatee: A bibliometric analysis. Latin American Journal of Aquatic Mammals, 18(1), 158-166. https://doi.org/10.5597/lajam00297 Please click the following link to have full access to the publications: https://lajamjournal.org/index.php/lajam/issue/view/49 We hope you enjoy reading these contributions, and we also invite you to consider our journal to submit your next manuscripts: https://lajamjournal.org/index.php/lajam/about/submissions Kind regards, Dr. Eduardo Morteo Director Instituto de Investigaciones Biológicas Universidad Veracruzana Calle Dr. Castelazo Ayala S/N, Col. Industrial Ánimas CP 91190, Xalapa, Veracruz, México. Ph/Tel: +52 (228) 841 89 00 E-mail: emorteo@uv.mx http://www.uv.mx/personal/emorteo/ http://uv-mx.academia.edu/EMorteo https://www.researchgate.net/profile/Eduardo_Morteo/?ev=hdr_xprf http://scholar.google.com.mx/citations?user=fDUl-IIAAAAJ