OOIR: Observatory of International Research

Papers

(The median citation count of Aquatic Mammals is 1. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2022-05-01 to 2026-05-01.)

Article	Citations
Molecular Identification of a Southern Elephant Seal (Mirounga leonina) from the Nayarit Coast, Mexico	19
Purposeful Porpoise Training at Fjord&Bælt: The First 25 Years	16
Spirit in Motion: A Flukeless Bottlenose Dolphin Survives for Over Two Years in the Western Mediterranean	11
Cetacean Mortality Related to Ship Traffic in the Mexican Central Pacific	10
Records of Postmortem Attentive Behavior on an Irrawaddy Dolphin (Orcaella brevirostris) Calf and Implications for Conservation in Kuching Bay, Sarawak, East Malaysia	10
Recent Accidental Entanglements of Humpback Whales (Megaptera novaeangliae) in the Colombian Pacific	10
The Human Dimensions of Small Cetacean Conservation: 2022 Workshop Report, Nuremberg, Germany	9
Rare Observation of a Living Southern Elephant Seal (Mirounga leonina) at Terra Nova Bay, Victoria Land Coast, Ross Sea, Antarctica	9
Geographic Distribution of North Atlantic Humpback Whales (Megaptera novaeangliae) with Fluke Scars Caused by Killer Whales (Orcinus orca)	9
Estimating Population Abundance of Atlantic Bottlenose Dolphins (Tursiops truncatus) in the Coastal Waters of Palm Beach County, Southeastern Florida	9
Hidden on the Edge: Franciscana Dolphins (Pontoporia blainvillei) Are Highly Overlapped with a Marine Protected Area at the Limit of a Management Area	8
A Possible Example of the Coexistence of Dolphins and Marine Economic Activity in Osaka Bay, Japan	8
An Unusual Record of a Marine Dolphin (Sotalia guianensis) Being Scavenged by Jaguar (Panthera onca) at the Northern Brazilian Amazon	8
Evidence that Humpback Whales (Megaptera novaeangliae), Including Calves, Use Isolated Johnston Atoll in the Tropical Central North Pacific	7
Stranding of Beaked Whales in Santa Cruz Province, Southern Patagonia, Argentina (1895-2023)	7
Evaluating the Use of Diazepam in Stranded Dolphins and Porpoises for Husbandry and Veterinary Purposes	7
Neonatal Facial Pigmentation of Pygmy Killer Whales (Feresa attenuata): A Description from Repeated Observations of Individuals in the Wild	7
Hematology and Blood Chemistry Reference Intervals for Antillean Manatees (Trichechus manatus manatus) in Colombia	6
First Sighting of Longman’s Beaked Whale (Indopacetus pacificus) off the Chichijima Islands, Ogasawara (Bonin) Islands, Japan	6
Innovative Machine Learning and Stakeholder Method to Assess Bycatch of Tursiops truncatus in the Southern Gulf of Mexico	6
Modeling Suitable Habitats of Indo-Pacific Humpback Dolphins (Sousa chinensis) in a Highly Urbanized Bay	5
In Memoriam: Jim Estes	5
Southern Right Whale Sightings and Two Incidences of Interaction with Peale’s Dolphins in Los Ríos Region, Southern Chile	5
Identifying and Characterizing Signature Whistles Using Photo-Identification of Free-Ranging Bottlenose Dolphins (Tursiops truncatus) in Tampa Bay, Florida	5
Account of a Solitary Humpback Whale (Megaptera novaeangliae) Bubble-Net Feeding in the Moray Firth, Northeast Scotland	5

Orcas (Orcinus orca) Use Different Strategies to Prey on Rays in the Gulf of California	5
Updating the Cetacean Species List of Raja Ampat, Indonesia, with Additional Sightings of the Rarely Documented Omura’s Whale (Balaenoptera omurai)	5
Dyadic Interspecific Interaction Between a Harbour Seal (Phoca vitulina) and a Eurasian Otter (Lutra lutra)	4
Allomaternal Care and Allonursing Behaviors by a Primiparous Bottlenose Dolphin	4
Descriptive Analysis of the Social Network of South African Fur Seals (Arctocephalus pusillus pusillus) and California Sea Lions (Zalophus californianus) in Managed Care	4
Two Dolphin–Vessel Collisions in Mexican Waters: Potential Implications for Dolphin Behavior and Boating Safety	4
Defying Evolution: Observations of a Mouth-Breathing Bottlenose Dolphin (Tursiops truncatus)	4
Prevalence, Composition, and Behaviour of Humpback Whale (Megaptera novaeangliae) Groups Containing Multiple Mother–Calf Pairs in East Australia	4
Behavioral, Pathomorphological, and Clinical Observations of a Young Harbor Porpoise (Phocoena phocoena) with Congenital Hemihydranencephaly	4
Group Dynamics and Social Structure of the Inia araguaiaensis in the Tocantins River, Brazilian Cerrado	4
First Record of Sowerby’s Beaked Whale (Mesoplodon bidens) on México’s Coast and the Caribbean Sea	4
Comparative Muscle Physiology of Ringed (Pusa hispida), Bearded (Erignathus barbatus), and Spotted (Phoca largha) Seals from the Bering and Chukchi Seas	4
Arabian Sea Humpback Whale (Megaptera novaeangliae) Singing Activity off Netrani Island, India	4
Contact Exchanges in Bottlenose Dolphin Mother–Calf Pairs	4
Recent Visual and Acoustic Records of Melon-Headed Whales, Interspecific Associations in Tanzania, and a Review of Regional Records in the Southwest Indian Ocean	4
An Antarctic Minke Whale (Balaenoptera bonaerensis) Live-Stranding in Venezuela: First Record for the Caribbean Sea	4
Sea Otters (Enhydra lutris) Found in the Stomach of a Stranded Killer Whale (Orcinus orca) in the Commander Islands, Western North Pacific	4
New Record of California Coastal Bottlenose Dolphins (Tursiops truncatus) in Offshore Waters	4
ESOMM-2024 Programme: 8th International Meeting on the Effects of Sound in the Ocean on Marine Mammals	4
Erratum: The Survival of a Flukeless Juvenile Dolphin (Tursiops aduncus) in the Wild	4
Evidence of Large Whale Socio-Sexual Behavior in the New York Bight	4
Sperm Whale (Physeter macrocephalus) Behavioral Events Observed During Aerial Surveys in the New York Bight, 2017-2020	3
Quantifying Sound Exposure in a Pool: Comparing Hydrophones on a Grid with a Sound-Recording Tag on a California Sea Lion (Zalophus californianus)	3
Herd Size Dynamics and Observations on the Natural History of Dugongs (Dugong dugon) in the Andaman Islands, India	3
Revillagigedo Archipelago, Mexico: A Probable Calving Area for Common Bottlenose Dolphins (Tursiops truncatus)	3
Records of Fatal Killer Whale (Orcinus orca) Attacks on Fin Whales (Balaenoptera physalus) with an Emphasis on Baja California, Mexico	3
A Systematic Review of the Status, Knowledge, and Research Gaps of Dugong in Southeast Asia	3
Location Tag Adapted from Fitness Tracker Watch, Tested on Humpback Whales (Megaptera novaeangliae)	3
Assessing Residency and Site Fidelity in Bottlenose Dolphins: A Literature Review and Bibliometric Analysis	3
First Record of a Blainville’s Beaked Whale (Mesoplodon densirostris) in Cuba	3
Anecdotal Accounts of Manatee Behavior: Conservation and Management, Behavioral Ecology, and Cognition	3
Curly Tails: Rare Occurrence of Bent Flukes in Free-Ranging Cetaceans	3
Validation of a Glucometer for Serum Glucose Quantitation in Wild California Sea Lion (Zalophus californianus) Pups	3
Dr. Roger Payne: A Tribute	3
Temporary Hearing Threshold Shift in California Sea Lions (Zalophus californianus) Due to a Noise Band Centered at 32 kHz	2
An Agent-Based Model of Human–Whale Interactions in the North Atlantic	2
Evidence for an Oceanic Population of Killer Whales (Orcinus orca) in Offshore Waters of California and Oregon	2
Errata Note: Common Cetacean Species Misidentifications	2
Life Histories of Satellite-Tracked Southern Right Whales Through Photo-Identification and Citizen Science in Patagonia, Argentina	2
First Record of Predation on an Oilfish and a Previously Unknown Cephalopod Prey by a Short-Finned Pilot Whale in East Nusa Tenggara, Indonesia	2
Assessment of the Distribution and Coexistence of Two Sympatric Otter Species in the Chiloé Archipelago, Chile, Using Photo-Identification	2
Stomach Contents of Three Sperm Whales (Physeter macrocephalus) Stranded on Andøya, Northern Norway	2
The Introduction of a Novel Computerized Apparatus to California Sea Lions (Zalophus californianus)	2
Northern Range Expansion of California Coastal Bottlenose Dolphins (Tursiops truncatus)	2
Underwater Sound Detection Thresholds (0.031-80 kHz) of Two California Sea Lions (Zalophus californianus) and a Revised Generic Audiogram for the Species	2
Observations of the First Documented Indian Ocean Humpback Dolphin (Sousa plumbea) in the Northernmost Red Sea Gulf of Aqaba	2
Capture-Release Protocol for Araguaian River Dolphins (Inia araguaiaensis) and Preliminary Physiological Parameters: An In Situ Approach for Research and Conservation	2
Killer Whale (Orcinus orca) Male Carrying a Dead Calf	2
Behavioural Response of Harbour Seal (Phoca vitulina) Pups in Captivity to Food-Related Chemical Cues	2
A Mother–Calf Humpback Whale (Megaptera novaeangliae) Pair from the Southeast Pacific Population Sighted in Mexican Waters	2

A New Simple Method for Age Determination of Harbour Porpoises (Phocoena phocoena)	2
Harassing Behavior by Short-Finned Pilot Whales (Globicephala macrorhynchus) Towards a Mother and Calf Sperm Whale (Physeter macrocephalus) Pair	2
First Bowhead Whale (Balaena mysticetus) Sighting in Southeast Alaska: An Extralimital Southern Excursion of this Arctic-Adapted Species	2
Whistle Characteristics of the Rough-Toothed Dolphin (Steno bredanensis) in the Canary Islands	2
Automatically Counting Florida Manatees (Trichechus manatus latirostris) from Drone Images Using Object-Based Image Analysis	2
Biometrics of Stranded White-Beaked Dolphins (Lagenorhynchus albirostris) in Danish Waters	2
Hunting, Fighting, or Playing with Bubbles: Possible Usage and Acoustic Characteristics of Bubble Burst Sounds Produced by the Amazon River Dolphin (Inia geoffrensis)	2
Recovery of a Mid-Gestational Gray Whale (Eschrichtius robustus) Fetus Near Tofino, British Columbia	2
Baseline Urinalysis of the Fully Marine, Herbivorous Dugong (Dugong dugon)	2
A Beluga (Delphinapterus leucas) off the West Coast of Baja California Sur, Mexico: The Southernmost Record Far from Its Typical Distribution Area	2
Photo-Identification and Skin Lesion Prevalence of Bottlenose Dolphins (Tursiops erebennus) in the Waters of New York and New Jersey	2
Attempted Predation on Northern Elephant Seal Weanlings (Mirounga angustirostris) by Coyote (Canis latrans) in Point Reyes National Seashore, California	2
Fish Feeding and Rapid Foraging Behavior Switching by Gray Whales (Eschrichtius robustus) in California	2
Semen Quality and Electron Microscopy of Captive Irrawaddy Dolphin (Orcaella brevirostris) Sperm	2
Feeding Association Between Harbour Porpoise (Phocoena phocoena) and Flyshoot Fishing	2
A Walrus (Odobenus rosmarus) at the North Pole	2
Humpback Whale Movements in the Northeastern Atlantic: Madeira, A Crossing Point on the Migration Route	1
Temporal and Spatial Distribution of Harbor Seal (Phoca vitulina) Risk of Entanglement in Gillnets Along the Norwegian Coast	1
First Reported Encounter of Bryde’s Whale and Interaction with Humpback Whales in the Gulf of Tribugá, Chocó, Northern Colombian Pacific	1
Indian Ocean Sighting of Shepherd’s Beaked Whale (Tasmacetus shepherdi) Helps Confirm Circumpolar Distribution in Southern Hemisphere	1
Observations of Mating Practice by Non-Sexually Mature Male Belugas (Delphinapterus leucas)	1
The First Two Detected Cases of Polythelia with Possible Polymastia in the Mediterranean Monk Seal (Monachus monachus)	1
The Northernmost Record of a Stranded Southern Right Whale (Eubalaena australis) Calf in Ecuador’s North Coast: Notes on Stranding Causes and Distribution Expansion in the Southeastern Tropical Pacifi	1
Observations of Burmeister’s Porpoise (Phocoena spinipinnis) in the Northern Coast of Peru	1
Histopathology, Immunohistochemical Diagnosis, and Management of Penicillin-Resistant Staphylococcus delphini Cutaneous Infection in a Bottlenose Dolphin	1
Preliminary Results of Harbor Seal (Phoca vitulina) Salivary Progesterone During Breeding Under Human Care	1
Occurrence and Seasonal Residency of a Community of Common Bottlenose Dolphins (Tursiops truncatus) off Bimini, The Bahamas, 2006-2016	1
Severity Scoring of Sperm Whale Behavioral Responses to an Operational Sonar Source Reveals Importance of Received Level and Source-Receiver Distance	1
Marine Mammal Experts. Let’s Share Your Stories! An Open Letter Reflecting on the 52nd Annual Symposium of the European Association for Aquatic Mammals	1
Holistic Pinniped Welfare Index (HPWI): A Tool to Assess Welfare in Pinnipeds	1
Book Review: Sea Mammals: The Past and Present Lives of Our Oceans’ Cornerstone Species	1
Bubble Bursts, a Potential Foraging Strategy for Bottlenose Dolphins (Tursiops truncatus) in Cardigan Bay	1
Affiliative Behavior After Aggressions in Common Bottlenose Dolphins (Tursiops truncatus)	1
Stable Carbon and Nitrogen Isotope Variation of Guadalupe Fur Seal (Arctocephalus townsendi) Guard Fur and Underfur: Implications for Ecological Interpretations	1
A Young Eden’s Whale (Balaenoptera edeni edeni) Wandering in a Busy International Container Port	1
Systematic Review of Pinniped Sightings and Strandings Along the Pacific Coast of Colombia: Implications for Pinniped Conservation	1
Opportunistic Observation of Long-Finned Pilot Whales Interacting with a Solitary Humpback Whale in the Gascogne Gulf (Northwest Atlantic)	1
First Humpback Whale Movement Between Ecuador and the South Sandwich Islands: Redefines the Easternmost Migration Point of Breeding Stock G	1
Antarctic Minke Whale (Balaenoptera bonaerensis) Bio-Duck Call Detection in the Río de la Plata, Uruguay	1
Monitoring Bottlenose Dolphin (Tursiops truncatus) Welfare During a Functional Neuroimaging Study	1
Blue Whale (Balaenoptera musculus) Mother–Calf Pair Behavioral Response to Vessel in the Southern California Bight	1
Lessons from 40 Years as a Marine Scientist: Advice to a Young Lisa	1
Observations of Adult–Calf Nonreproductive Copulatory Behavior in North Atlantic Right Whales (Eubalaena glacialis)	1
Temporary Hearing Threshold Shift and Testing the Equal-Energy Hypothesis in a Harbor Porpoise (Phocoena phocoena) After Exposure to a Continuous Noise Band at 8 kHz, and a Revised TTS-Onset Function	1
Observations on the Long-Term Survival of an Injured Indo-Pacific Bottlenose Dolphin (Tursiops aduncus) Without an Upper Rostrum in Toshima Island, Japan	1
Factors Influencing the Development of Human–Animal Relationships at SeaWorld Entertainment Parks	1
From Breeding to Feeding Grounds: Tracking the Survival of a White Humpback Whale (Megaptera novaeangliae)	1
Temporary Hearing Threshold Shift in California Sea Lions (Zalophus californianus) Due to a Noise Band Centered at 40 kHz and Comparison with Shifts Due to Lower-Frequency Sounds	1
Demographic Insights and Spatial Distribution of the Commerson’s Dolphin (Cephalorhynchus commersonii) off the Kerguelen Archipelago (Southern Indian Ocean)	1
Killer Whale (Orcinus orca) Harassment on Humpback Whales (Megaptera novaeangliae) in Offshore Brazilian Waters	1
Examination of Isotopic Signals to Determine Trophic Dynamics and Diet of Gulf of Maine Mysticetes Prior to an Oceanographic Regime Shift	1
Determination of Metal and Metalloids in Bottlenose Dolphins’ (Tursiops truncatus) Skin from the Yucatan Peninsula, Mexico	1
Spatiotemporal Variation of Stranded Marine Mammals in the Philippines from 2005 to 2022: Latest Stranding Hotspots and Species Stranding Status	1
Synchronous Swimming and Diving Behaviour in a Group of Fin Whales (Balaenoptera physalus)	1
Two Gray Whale (Eschrichtius robustus) Sightings off Hawaiʻi Island: The First Records for the Central Tropical Pacific	1
Remote Underwater Video Confirms the Presence of Dugongs (Dugong dugon) at Ashmore Reef Australian Marine Park in the Eastern Indian Ocean	1
First Report of Organochlorine Pesticides and Heavy Metals in a Stranded Bottlenose Dolphin Off the Central Coast of Veracruz State: A Warning to Assess Pollution in a Reef Marine Ecosystem from the G	1
Predation of a Sperm Whale (Physeter macrocephalus) by Killer Whales (Orcinus orca) in Guanaja, Honduras	1
Possible Pregnancy Toxemia in a Late-Term Twin-Pregnant Harbor Seal (Phoca vitulina)	1
Yawn-Like Behavior in a Beluga Whale (Delphinapterus leucas)	1
Causes of Mortality in Harbor (Phoca vitulina) and Gray (Halichoerus grypus) Seals in Denmark	1
Phylogenetic Relationships Among Eastern Pacific Common Dolphins (Delphinus spp.)	1
Killer Whale (Orcinus orca) Acoustic Responses to Naval Sonar	1
Examination of Blubber Fatty Acids in Pregnant and Lactating Alaskan Harbor Seals (Phoca vitulina)	1
Necrocoitus in Common Bottlenose Dolphins (Tursiops truncatus) near Sarasota, Florida	1
First Record of a Piebald Bottlenose Dolphin (Tursiops truncatus) in Australian Waters	1
Co-Occurrence Between Salmon Farming, Alien American Mink (Neogale vison), and Endangered Otters in Patagonia	1
Auditory Health of Bowhead Whales (Balaena mysticetus) of the Bering-Chukchi-Beaufort Stock Based on Inner Ear Neuron Counts	1
Evidence of a Predatory Interaction of a Cookiecutter Shark (Isistius brasiliensis) on Galapagos Fur Seals (Arctocephalus galapagoensis)	1
Fatal Asphyxiation with Plastic Debris in a Melon-Headed Whale (Peponocephala electra, Gray, 1846) off the Coast of Honduras, and First Record of the Species for the Country	1
Behaviors of the Solitary Neotropical Otter (Lontra longicaudis) in Communal Latrines	1
Signature Calls in West Indian Manatee (Trichechus manatus manatus)?	1