Dear MARMAM community On behalf of the Editorial Committee, I would like to present Vol. 19(2) of the Latin American Journal of Aquatic Mammals. We publish peer reviewed articles on research, management and conservation biology of aquatic mammals in Latin America. Also, articles on theory or techniques broadly applicable to aquatic mammals are considered, even when the research has taken place outside Latin America. All our issues are available in PDF under Open Access and can be accessed here: https://lajamjournal.org/index.php/lajam/issue/archive In our last volume of 2024 you will find the following contributions: EDITORIAL Miriam Marmontel Editor-in-Chief ARTICLES Macroscopic and histologic characteristics of sexual maturation in the Burmeister’s porpoise Phocoena spinipinnis from Peru by Diana Vega Koen Van Waerebeek Joanna Alfaro-Shigueto Julio C. Reyes Marie-Francoise Van Bressem1(Pages 42-158) Tooth wear and dental pathology in Amazon River dolphins (Inia geoffrensis) and tucuxis (Sotalia fluviatilis) by Carolina Loch Miriam Marmontel (Pages 159-164) Site fidelity and population parameters of short-finned pilot whales (Globicephala macrorhynchus ) in the Eastern Caribbean through photographic identification by Manon Riou Claire Freriks Célia Ortolé Céline Valin Morjane Safi Eric Cockx Cédric Millon Laurent Bouveret Benjamin de Montgolfier (Pages 165-181) Artificial intelligence improves the identification of fur seals recorded at Southern Brazilian coast by Carlos Oliveira Camila Spaniol Klagenberg Maurício Roberto Veronez Larissa Rosa Oliveira (Pages 182-189) Occurrence of cetacean strandings on the coast of São Paulo Brazil: a spatio-temporal assessment from 2017 to 2021 by Alexandre Martinelli Daniela Ferro de Godoy Yaçanã Luana Wiener Claudio de Souza Vieira Júnior Claudia Carvalho do Nascimento Daniela Sá de Mello Caio Noritake Louzada Renata Maria Taufer (Pages 190-201) Franciscana Pontoporia blainvillei stranding records from systematic beach surveys opportunistic and incidental capture reports at theRío Negro Estuary Patagonia Argentina (2003 – 2023) by Miguel Iñíguez Bessega Marina Winter Sergio Damián Abate Verónica Andrea Seijas Marta Hevia Mauricio Failla (Pages 202-210) Pseudomonas aeruginosa sepsis in a neonate Franciscana dolphin (Pontoporia blainvillei): clinical approach and laboratory findings by Marzia Antonelli Mateus Rocha Ribas Rafael Meurer Sandro Sandri Jussara Kasuko Palmeiro Thaís Cristine Marques Sincero Cristiane Kiyomi Miyaji (Pages 211-218) NOTES Gross anatomy and histology of the heart and great vessels of a leopard seal (Hydrurga leptonyx) by Alejandro Díaz Marta Carolina De León Eduardo Castro Verónica Eyheramendy Juan Manuel Herrera Pablo Denuncio Antonio Felipe Joaquín Carlos Mario Gana Mariela Dassis (Pages 219-225) Downsweep calls attributed to sei whales Balaenoptera borealis in Ilhabela São Paulo Brazil by Daniela Pivari Sergio Moreira Heitor Crespo Júlio Cardoso Renata Sousa-Lima (Pages 226-230) First record of humpback whales in the Caribbean coast of Costa RicaLaura May-Collado Kristin Rasmussen Jose David Palacios Alfaro Frank Garita Alpizar (Pages 231-236) IN MEMORIAM Armando Jaramillo-Legorreta (1964-2024) by Lorenzo Rojas-Bracho Edwyna Nieto-García Gustavo Cárdenas-Hinojosa Barb Taylor Jay Barlow Len Thomas Nick Tregenza Annette Henry Sarah Mesnick Juan Carlos Salinas Ernesto Vázquez-Morquecho Horacio de la Cueva Kristin Nowell Valeria Towns-Alonso Jorge Urbán-Ramirez Robert Brownell (Pages 237-239) Enjoy our featured contributions and happy reading! Dr. Eduardo Morteo Managing Editor Latin American Journal of Aquatic Mammals 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