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Aquatic Mammals, Volume 42, Number 2, 2016 ISSN 0167-5427

ContentsR. E. Burnham & D. A. Duffus: Gray Whale (Eschrichtius robustus) Predation and the Demise of Amphipod Prey Reserves in Clayoquot Sound, British Columbia. . . . . . . . . . . . . . . . . . . . . .123H. Barrios-Garrido, K. De Turris-Morales, C. M. Nash, G. Delgado-Ortega, & N. Espinoza-Rodríguez: Acoustic Parameters of Guiana Dolphin (Sotalia guianensis) Whistles in the Southern Gulf of Venezuela . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127A. M. Bishop, J. Onoufriou, S. Moss, P. P. Pomeroy, & S. D. Twiss: Cannibalism by a Male Grey Seal (Halichoerus grypus) in the North Sea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137V. Survilienė, O. Rukšėnas, & P. Pomeroy: Play Behavior of Wild Grey Seals (Halichoerus grypus): Effects of Haulout Group Size and Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .144L. S. Ponnampalam: No Danger in Sight? An Observation of Sperm Whales (Physeter macrocephalus) in Marguerite Formation off Muscat, Sultanate of Oman. . . . . . . . . . . . . . . . . . .162D. P. Noren & D. D. W. Hauser: Surface-Based Observations Can Be Used to Assess Behavior and Fine-Scale Habitat Use by an Endangered Killer Whale (Orcinus orca) Population . . . . . . . . . . . . . . . .168K. Lucke, J. J. Finneran, J. Almunia, & D. S. Houser: Variability in Click-Evoked Potentials in Killer Whales (Orcinus orca) and Determination of a Hearing Impairment in a Rehabilitated Killer Whale. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .184K. Ottewell, D. Coughran, M. Gall, L. Irvine, & M. Byrne: A Recent Stranding of Omura’s Whale (Balaenoptera omurai) in Western Australia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .193E. Quintana-Rizzo & R. S. Wells: Behavior of an Adult Female Bottlenose Dolphin (Tursiops truncatus) Toward an Unrelated Dead Calf. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .198F. B. Izidoro & Y. Le Pendu: Rostrum Contact Behaviors by the Guiana Dolphin (Sotalia guianensis) in Ilhéus, Brazil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .203K. Lucke, B. Van Dun, K. Gardner-Berry, L. Carter, K. Martin, T. L. Rogers, & J. S. Tripovich: Click-Evoked Auditory Brainstem Responses in an Australian Sea Lion (Neophoca cinerea) . . . . . . . . . . .210R. A. Kastelein, R. J. V. Triesscheijn, & N. Jennings: Reversible Bending of the Dorsal Fins of Harbor Porpoises (Phocoena phocoena) and a Striped Dolphin (Stenella coeruleoalba) in Captivity. . . . . .218J. Haelters, E. Everaarts, P. Bunskoek, L. Begeman, J. W. J. Hinrichs, & L. L. IJsseldijk: A Suspected Scavenging Event by Red Foxes (Vulpes vulpes) on a Live, Stranded Harbour Porpoise (Phocoena phocoena) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .227D. Haro, L. Riccialdelli, J. Acevedo, A.Aguayo-Lobo, & A. Montiel: Trophic Ecology of Humpback Whales (Megaptera novaeangliae) in the Magellan Strait as Indicated by Carbon and Nitrogen Stable Isotopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .233R. Peres dos Santos, S. Simião, P. Madruga, A. S. Mendonça, R. Seitre, & J. Nuno Gomes-Pereira: Anomalously White Atlantic Spotted Dolphins (Stenella frontalis, Cuvier, 1892) off the Azores . . . . . . . . .245L. E. Highfill, D. Yeater, & S. A. Kuczaj II: Catch! Dolphin (Tursiops truncatus) Ball Tossing to Humans Is Affected by Human Perspective . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .253

Letters to the Editor K. Dezio: 2016 Alliance of Marine Mammal Parks & Aquariums’ Annual Meeting . . . . . . . . . . . . . . . . . . .259B. Andrews: The 44th Annual EAAM Symposium 2016 – Scientific Program . . . . . . . . . . . . . . . . . . . . . . .260

ObituaryMemories– Stanley (Stan) A. Kuczaj II. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .262

Aquatic MammalsAquatic Mammals publishes hard copies on-demand, CDs, and online peer-reviewed scientific articles related to

marine mammals (whales, dolphins, seals, fur seals, sea lions, walrus, dugongs, manatees, sea otters, and polar bears). Topics of publication on both captive animals and wild marine mammals include aspects of husbandry; behavior; conservation; veterinary medicine; anatomy; physiology; training; population trends; and the effects of pollution,

climate change, and noise. In addition, Aquatic Mammals has the Historical Perspectives feature, which includes essays and high definition DVDs of interviews with prominent marine mammal scientists. The journal also publishes Book Reviews.

AquaticMammals

Supported through Joint Sponsorship by the European Association for Aquatic Mammals,

the Alliance of Marine Mammal Parks and Aquariums, and the International Marine Animal Trainers’ Association

Founded by EAAM in 1974

Photo: H. Barrios-Garrido

Established by the EAAM in 1974

Aquatic MammalsThe European Association for Aquatic Mammals (EAAM), the Alliance of Marine Mammal Parks

and Aquariums (AMMPA), and the International Marine Animal Trainers’ Association (IMATA) jointly sponsor Aquatic Mammals (ISSN 0167-5427), published four times per year.

Managing Editor and CopyrightKathleen M. Dudzinski, Ph.D.

Mailing Address: PO Box 7485, Port St. Lucie, Florida 34985, USAE-mail: aquaticmammals@gmail.com or business@aquaticmammalsjournal.org, Tel: +1 (860) 514-4704

Co-EditorsShane B. Kanatous, Ph.D., Department of Biology, Colorado State University

E-mail: Shane.Kanatous@ColoState.eduDavid A. S. Rosen, Ph.D., Marine Mammal Research Unit, University of British Columbia

E-mail: rosen@zoology.ubc.caElizabeth Henderson, Ph.D., Navy Marine Mammal Program, SPAWAR, San Diego, California

E-mail: eehenders@gmail.comAlyson H. Fleming, Ph.D., Smithsonian National Museum of Natural History, Washington, DC

E-mail: alyson.fleming@gmail.comKristy L. Biolsi, Ph.D., Department of Psychology, St. Francis College, Brooklyn, New York

E-mail: kbiolsi@sfc.edu

Book Review EditorMaryEllen Mateleska, Mystic Aquarium

E-mail: mmateleska@searesearch.org

Editors EmeritiWillem H. Dudok van Heel, Victor J. A. Manton, Paul E. Nachtigall, Jeanette A. Thomas

Editorial BoardArne Bjørge, Institute of Marine Research, Gaustadalleen 21, 0349 Oslo, Norway

Manuel E. dos Santos, MARE, ISPA - Instituto Universitário, Lisboa, PortugalManuel García Hartmann, Marineland Antibes, France

Heidi Harley, Division of Social Sciences, New College of Florida, Sarasota, Florida, USAA. Rus Hoelzel, School of Biological and Biomedical Sciences, University of Durham, Durham, UK

Christina Lockyer, Age Dynamics, Kongens Lyngby, DenmarkLee A. Miller, Institute of Biology, University of Southern Denmark, Odense, Denmark

Paul E. Nachtigall, Hawaii Institute of Marine Biology, Kailua, Hawaii, USAGiuseppe Notarbartolo di Sciara, Tethys Research Institute, Milano, ItalyDan Odell, Hubbs-Sea World Research Institute, Orlando, Florida, USA

Grey Stafford, Wildlife World Zoo, Litchfield Park, Arizona, USA

Copy Editing and Layout Design Services Sandra K. Larimer and Shanee J. Sullivan, Macomb, Illinois 61455, USA

Cover Photos Center: A gray whale (Eschrichtius robustus) calf curious about its surroundings, raises its head out of the kelp

Top right, bottom right: Foraging gray whale in a clear patch on an otherwise foggy August day, taken during observations at anchor

Photo credits: R. BurnhamLeft side & right middle: Sotalia guianensis from the Maracaibo Lake System. All the Sotalia guianensis photos

were taken under Special Permit Number 0038, granted by Venezuela’s Environment Ministry (Ministerio para el Poder Popular del Ambiente) now named Ministry of Eco-Socialism and Water.

Photo credits: H. Barrios-Garrido

Aquatic MammalsBoard of the European Association for Aquatic Mammals (EAAM)

www.eaam.orgPresident: Brad Andrews, Sea World Parks & Entertainment, president@eaam.org

President-Elect: Javier Almunia, Loro Parque Fundación, president_elect@eaam.org Past President: Arlete Sogorb, Lisbon Zoo, past_ president@eaam.org

Secretary/Treasurer: Camino Herreros Paris, Mundomar, camino.eaam@mundomar.esInformation Committee: Ann-Louise Jensen and Javier Almunia, information@eaam.org

Alliance of Marine Mammal Parks and Aquariums (AMMPA) www.ammpa.org

Executive Director: Kathleen DezioE-mail: executivedirector@ammpa.org

Board of DirectorsPresident: Rita Irwin, Dolphin Research Center, Rita@dolphins.org

Past President: Kevin Willis, Minnesota Zoo, kevin.willis@state.mn.usVice President: Stewart Clark, Discovery Cove, Stewart.Clark@DiscoveryCove.com

Treasurer: Bill Hughes, SeaWorld Orlando, bill.hughes@seaworld.comSecretary: Travis Burke, Dolphin Discovery, tburke@dolphindiscovery.comDirector-at-Large: Patrick Berry, Gulfarium, patrick.berry@gulfarium.com

Director-at-Large: Bill Zeigler, Chicago Zoological Society, bill.zeigler@czs.org

International Marine Animal Trainers’ Association (IMATA) www.imata.org

Board of DirectorsPresident: Michele Sousa, Aquarium of the Pacific, president@imata.org

President-Elect: Grey Stafford, Wildlife World Zoo and Aquarium, presidentelect@imata.orgPast President: Lindas Erbe, Dolphin Research Center, pastpresident@imata.org

Secretary: Amanda Barra, secretary@imata.orgPast Secretary: Alex Mata, Dolphin Discovery, pastsecretary@imata.org

Treasurer: Rita Stacey, Brookfield Zoo, treasurer@imata.orgPast Treasurer: Robert Roozendaal, pasttreasurer@imata.org

First Vice President: Jennifer Pletcher, SeaWorld San Diego, firstvp@imata.orgSecond Vice President: Suzanne Smith, Audubon Aquarium of the Americas, secondvp@imata.org

Third Vice President: Will Elgar, Georgia Aquarium, thirdvp@imata.orgDirector-at-Large: Alex Mata, Dolphin Discovery, director@imata.org

For subscriptions, instructions to authors, abstracts of previous issues, publication fees, hard copies, back issues, CDs, and Historical Perspectives DVDs, see the Aquatic Mammals website:

www.aquaticmammalsjournal.org

For details about the online versions of Aquatic Mammals, see the following websites:Aquatic Mammals: www.aquaticmammalsjournal.org

ProQuest: www.proquest.com (specific to library subscribers)

Printed by Minuteman Press, 595 West Main Street, Norwich, CT 06360, USA