Dear MARMAM and ECS-talk subscribers, Apologies to those of you who will receive duplicate emails due to cross-posting. The following titles represent the contents of the most recent issue (Volume 44, issue 4, 2018) of Aquatic Mammals. Links to a purchase page for each article are included below. For individuals with a print subscription, the double print copy of 44.3/44.4 will be mailed later this month. Aquatic Mammals is the longest running peer-reviewed journal dedicated to research on aquatic mammals and is published quarterly with manuscripts available as published PDFs in real time. Further information about the journal can be found at: http://www.aquaticmammalsjournal.org/ <http://www.aquaticmammalsjournal.org/> To submit a manuscript for publication consideration, please visit: http://am.expressacademic.org/actions/author.php <http://am.expressacademic.org/actions/author.php> Thank you for your continued interest in the journal and abstract postings. With regards, Kathleen M. Dudzinski, Ph.D. Editor, Aquatic Mammals Journal business@aquaticmammalsjournal.org <mailto:business@aquaticmammalsjournal.org> aquaticmammals@gmail.com <mailto:aquaticmammals@gmail.com> Research Articles: Marie-Anne Blanchet, Mario Acquarone, Martin Biuw, Roger Larsen, Erling S. Nordøy, and Lars P. Folkow. (2018). A Life After Research? First Release of Harp Seals (Pagophilus groenlandicus) After Temporary Captivity for Scientific Purposes. Aquatic Mammals, 44(4), 343-356. DOI: https://doi.org/10.1578/AM.44.4.2018.343 <https://doi.org/10.1578/AM.44.4.2018.343> Susan J. Chivers, Wayne L. Perryman, Morgan S. Lynn, Kristi West, and Robert L. Brownell, Jr. (2018). “Northern” Form Short-Finned Pilot Whales (Globicephala macrorhynchus) Inhabit the Eastern Tropical Pacific Ocean. Aquatic Mammals, 44(4), 357-366. DOI: https://doi.org/10.1578/AM.44.4.2018.357 <https://doi.org/10.1578/AM.44.4.2018.357> John S. Reif, Adam M. Schaefer, Mackenzie Daniel, Tyler Harrington, Dennis Hanisak, Elizabeth Titcomb, and Marilyn Mazzoil. (2018). Dolphin Sightings in the Vicinity of Land/Ocean Biogeochemical Observatories: Relationships with Weather and Water Quality. Aquatic Mammals, 44(4), 367-373. DOI: https://doi.org/10.1578/AM.44.4.2018.367 <https://doi.org/10.1578/AM.44.4.2018.367> Martha P. Rosas-Hernández, David Aurioles-Gamboa, and Claudia J. Hernández-Camacho. (2018). Differences in the Isotopic Niche and Trophic Position of Female California Sea Lions (Zalophus californianus) in Distinct Oceanographic Conditions. Aquatic Mammals, 44(4), 374-388. DOI: https://doi.org/10.1578/AM.44.4.2018.374 <https://doi.org/10.1578/AM.44.4.2018.374> Ronald A. Kastelein, Lean Helder-Hoek, Shirley Van de Voorde, Simone de Winter, Susan Janssen, and Michael A. Ainslie. (2018). Behavioral Responses of Harbor Porpoises (Phocoena phocoena) to Sonar Playback Sequences of Sweeps and Tones (3.5-4.1 kHz). Aquatic Mammals, 44(4), 389-404. DOI: https://doi.org/10.1578/AM.44.4.2018.389 <https://doi.org/10.1578/AM.44.4.2018.389> Eduardo F. Castro, Mariela Dassis, M. Carolina De León, Edgardo Rodríguez, Randall W. Davis, Alejandro Saubidet, Diego H. Rodríguez, and Alejandro Díaz. (2018). Echocardiographic Left Ventricular Structure and Function in Healthy, Non-Sedated Southern Sea Lions (Otaria flavescens). Aquatic Mammals, 44(4), 405-410. DOI: https://doi.org/10.1578/AM.44.4.2018.405 <https://doi.org/10.1578/AM.44.4.2018.405> Suzanne Teerlink, Larissa Horstmann, and Briana Witteveen. (2018). Humpback Whale (Megaptera novaeangliae) Blubber Steroid Hormone Concentration to Evaluate Chronic Stress Response from Whale-Watching Vessels. Aquatic Mammals, 44(4), 411-425. DOI: https://doi.org/10.1578/AM.44.4.2018.411 <https://doi.org/10.1578/AM.44.4.2018.411> Kathleen M. Dudzinski, Deirdre Yeater, Teri Bolton, Holli Eskelinen, and Heather Hill. (2018). Defining Creativity and Confirming Understanding of the Concept in Dolphins: Research and Training Perspectives. Aquatic Mammals, 44(4), 426-436. DOI: https://doi.org/10.1578/AM.44.4.2018.426 <https://doi.org/10.1578/AM.44.4.2018.426> Historical Perspectives Essay: Michael D. Scott. (2018). Historical Perspectives: Beginnings. Aquatic Mammals, 44(4), 437-457. DOI: https://doi.org/10.1578/AM.44.4.2018.437 <https://doi.org/10.1578/AM.44.4.2018.437>