Dear all, On behalf of our Editorial Board, it is my pleasure to announce that issue 6-1 of the Latin American Journal of Aquatic Mammals (LAJAM) is now available. This issue includes the following articles: CONTENTS A preliminary overview of skin and skeletal diseases and traumata in small cetaceans from South American waters...................................................................... ................................................ 7-42 Marie-Françoise Van Bressem, Koen Van Waerebeek, Julio C. Reyes, Fernando Félix, Mónica Echegaray, Salvatore Siciliano, Ana Paula Di Beneditto, Leonardo Flach, Francisco Viddi, Isabel Cristina Avila, Julio César Herrera, Isabel Cristina Tobón, Jaime Bolaños-Jiménez, Ignacio B. Moreno, Paulo H. Ott, Gian Paolo Sanino, Elena Castineira, David Montes, Enrique Crespo, Paulo A.C. Flores, Ben Haase, Sheila M. F. Mendonça de Souza, Maíra Laeta and Ana Bernadete Fragoso Corresponding author: marievanbressem@yahoo.co.uk Vessel collisions with small cetaceans worldwide and with large whales in the Southern Hemisphere, an initial assessment ............................................................................ ............. 43-69 Koen Van Waerebeek, Alan N. Baker, Fernando Félix, Jason Gedamke, Miguel Iñiguez, Gian Paolo Sanino, Eduardo Secchi, Dipani Sutaria, Anton van Helden and Yamin Wang Corresponding author: cepec@skynet.be Ecological aspects of marine tucuxi dolphins (Sotalia guianensis) based on group size and composition in the Cananéia estuary, southeastern Brazil .................................... 71-82 Marcos César de Oliveira Santos and Sergio Rosso Corresponding author: sotalia@gmail.com <mailto:sotalia@gmail.com.br> Mass stranding of Bairds beaked whales at San Jose Island, Gulf of California, Mexico ....83-88 Jorge Urbán R., Gustavo Cárdenas-Hinojosa, Alejandro Gómez-Gallardo U., Úrsula González-Peral, Wezddy del Toro-Orozco and Robert L. Brownell Jr. Corresponding author: jurban@uabcs.mx Site fidelity and behaviour of killer whales (Orcinus orca) at Sea Lion Island in the Southwest Atlantic ............................................................................ ....................................................... 89-95 Oliver Yates, Andrew D. Black and Paola Palavecino Corresponding author: oli_yates@yahoo.co.uk Movement of a humpback whale (Megaptera novaeangliae) between the Revillagigedo and Hawaiian Archipelagos within a winter breeding season ......................................................97-102 Paul H. Forestell and Jorge Urbán R. Corresponding author: paul.forestell@liu.edu Straggler subantarctic fur seals (Arctocephalus tropicalis) on the coast of Rio de Janeiro state, Brazil ............................................................................ ...................................................... 103-116 Jailson Fulgencio de Moura and Salvatore Siciliano Corresponding author: jailsonfm@gmail.com Has the manatee (Trichechus manatus) disappeared from the northern coast of the State of Veracruz, Mexico? ............................................................................ ..................................109-112 Arturo Serrano, Alexander García-Jiménez and Carlos González-Gándara Corresponding author: arserrano@uv.mx Isolation of Giardia sp. from an estuarine dolphin (Sotalia guianensis) in Ceará state, northeastern Brazil ............................................................................ ..................................113-116 Bianca de Luca Altieri, Daniel de Araujo Viana and Ana Carolina Oliveira de Meirelles Corresponding author: drbiluca@yahoo.com.br Unusual record of franciscana dolphins (Pontoporia blainvillei) in inner waters of the Cananéia estuary, southeastern Brazil ............................................................................ ....................117-119 Marcos César de Oliveira Santos, Eduardo dos Santos Pacífico and Michele Fernandes Gonçalves Corresponding author: sotalia@gmail.com Any further information can be obtained from the editors (LAJAM@infolink.com.br). LAJAM is distributed to members of the South American Society of Experts on Aquatic Mammals (www.solamac.net <http://www.solamac.net/> ) and the Mexican Society for the Study of Marine Mammals (www. somemma.org). North American subscriptions for non-members of SOLAMAC or SOMEMMA can be facilitated by contacting Nélio Barros (nbarros@mote.org) at P.O. Box 36, Tillamook, OR 97141-0036 USA. Best regards, Nélio Barros Editor-in-Chief, LAJAM