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 2022-08-01 to 2026-08-01.)

Article	Citations
Molecular Identification of a Southern Elephant Seal (Mirounga leonina) from the Nayarit Coast, Mexico	21
Purposeful Porpoise Training at Fjord&Bælt: The First 25 Years	13
Records of Postmortem Attentive Behavior on an Irrawaddy Dolphin (Orcaella brevirostris) Calf and Implications for Conservation in Kuching Bay, Sarawak, East Malaysia	11
Spirit in Motion: A Flukeless Bottlenose Dolphin Survives for Over Two Years in the Western Mediterranean	11
The Human Dimensions of Small Cetacean Conservation: 2022 Workshop Report, Nuremberg, Germany	10
Rare Observation of a Living Southern Elephant Seal (Mirounga leonina) at Terra Nova Bay, Victoria Land Coast, Ross Sea, Antarctica	10
Geographic Distribution of North Atlantic Humpback Whales (Megaptera novaeangliae) with Fluke Scars Caused by Killer Whales (Orcinus orca)	10
Estimating Population Abundance of Atlantic Bottlenose Dolphins (Tursiops truncatus) in the Coastal Waters of Palm Beach County, Southeastern Florida	10
An Unusual Record of a Marine Dolphin (Sotalia guianensis) Being Scavenged by Jaguar (Panthera onca) at the Northern Brazilian Amazon	9
Hidden on the Edge: Franciscana Dolphins (Pontoporia blainvillei) Are Highly Overlapped with a Marine Protected Area at the Limit of a Management Area	9
Cetacean Mortality Related to Ship Traffic in the Mexican Central Pacific	9
A Possible Example of the Coexistence of Dolphins and Marine Economic Activity in Osaka Bay, Japan	8
First Sighting of Longman’s Beaked Whale (Indopacetus pacificus) off the Chichijima Islands, Ogasawara (Bonin) Islands, Japan	8
Direct Observation of a Leopard Seal (Hydrurga leptonyx) Preying on a Notothenid Fish in Shallow Coastal Waters of the Western Antarctic Peninsula	8
Stranding of Beaked Whales in Santa Cruz Province, Southern Patagonia, Argentina (1895-2023)	7
Evidence that Humpback Whales (Megaptera novaeangliae), Including Calves, Use Isolated Johnston Atoll in the Tropical Central North Pacific	7
Hematology and Blood Chemistry Reference Intervals for Antillean Manatees (Trichechus manatus manatus) in Colombia	6
Innovative Machine Learning and Stakeholder Method to Assess Bycatch of Tursiops truncatus in the Southern Gulf of Mexico	5
In Memoriam: Jim Estes	5
Persistent Organic Pollutant and Trace Element Diagnosis in a Blainville’s Beaked Whale (Mesoplodon densirostris) Individual Stranded off the Mexican Central Pacific Coast	5
Modeling Suitable Habitats of Indo-Pacific Humpback Dolphins (Sousa chinensis) in a Highly Urbanized Bay	5
Identifying and Characterizing Signature Whistles Using Photo-Identification of Free-Ranging Bottlenose Dolphins (Tursiops truncatus) in Tampa Bay, Florida	5
Updating the Cetacean Species List of Raja Ampat, Indonesia, with Additional Sightings of the Rarely Documented Omura’s Whale (Balaenoptera omurai)	5
Southern Right Whale Sightings and Two Incidences of Interaction with Peale’s Dolphins in Los Ríos Region, Southern Chile	5
Orcas (Orcinus orca) Use Different Strategies to Prey on Rays in the Gulf of California	5

Evaluating the Use of Diazepam in Stranded Dolphins and Porpoises for Husbandry and Veterinary Purposes	5
Neonatal Facial Pigmentation of Pygmy Killer Whales (Feresa attenuata): A Description from Repeated Observations of Individuals in the Wild	5
Account of a Solitary Humpback Whale (Megaptera novaeangliae) Bubble-Net Feeding in the Moray Firth, Northeast Scotland	5
Recent Visual and Acoustic Records of Melon-Headed Whales, Interspecific Associations in Tanzania, and a Review of Regional Records in the Southwest Indian Ocean	5
Dyadic Interspecific Interaction Between a Harbour Seal (Phoca vitulina) and a Eurasian Otter (Lutra lutra)	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
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
Evidence of Large Whale Socio-Sexual Behavior in the New York Bight	4
Allomaternal Care and Allonursing Behaviors by a Primiparous Bottlenose Dolphin	4
Contact Exchanges in Bottlenose Dolphin Mother–Calf Pairs	4
ESOMM-2024 Programme: 8th International Meeting on the Effects of Sound in the Ocean on Marine Mammals	4
An Antarctic Minke Whale (Balaenoptera bonaerensis) Live-Stranding in Venezuela: First Record for the Caribbean Sea	4
Group Dynamics and Social Structure of the Inia araguaiaensis in the Tocantins River, Brazilian Cerrado	4
Prevalence, Composition, and Behaviour of Humpback Whale (Megaptera novaeangliae) Groups Containing Multiple Mother–Calf Pairs in East Australia	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
Semen Quality and Electron Microscopy of Captive Irrawaddy Dolphin (Orcaella brevirostris) Sperm	3
Arabian Sea Humpback Whale (Megaptera novaeangliae) Singing Activity off Netrani Island, India	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
Curly Tails: Rare Occurrence of Bent Flukes in Free-Ranging Cetaceans	3
Assessing Residency and Site Fidelity in Bottlenose Dolphins: A Literature Review and Bibliometric Analysis	3
Revillagigedo Archipelago, Mexico: A Probable Calving Area for Common Bottlenose Dolphins (Tursiops truncatus)	3
Dr. Roger Payne: A Tribute	3
Defying Evolution: Observations of a Mouth-Breathing Bottlenose Dolphin (Tursiops truncatus)	3
Sperm Whale (Physeter macrocephalus) Behavioral Events Observed During Aerial Surveys in the New York Bight, 2017-2020	3
Anecdotal Accounts of Manatee Behavior: Conservation and Management, Behavioral Ecology, and Cognition	3
Underwater Sound Detection Thresholds (0.031-80 kHz) of Two California Sea Lions (Zalophus californianus) and a Revised Generic Audiogram for the Species	3
Herd Size Dynamics and Observations on the Natural History of Dugongs (Dugong dugon) in the Andaman Islands, India	3
Can you Hear Me Now? Chronic Otitis Media and Concurrent Cutaneous Fusariosis in a Greater Caribbean Manatee (Trichechus manatus manatus) Under Human Care in Puerto Rico	3
Erratum: The Survival of a Flukeless Juvenile Dolphin (Tursiops aduncus) in the Wild	3
Records of Fatal Killer Whale (Orcinus orca) Attacks on Fin Whales (Balaenoptera physalus) with an Emphasis on Baja California, Mexico	3
First Record of a Blainville’s Beaked Whale (Mesoplodon densirostris) in Cuba	3
Location Tag Adapted from Fitness Tracker Watch, Tested on Humpback Whales (Megaptera novaeangliae)	3
Validation of a Glucometer for Serum Glucose Quantitation in Wild California Sea Lion (Zalophus californianus) Pups	3
A Beluga (Delphinapterus leucas) off the West Coast of Baja California Sur, Mexico: The Southernmost Record Far from Its Typical Distribution Area	2
Northern Range Expansion of California Coastal Bottlenose Dolphins (Tursiops truncatus)	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
Recovery of a Mid-Gestational Gray Whale (Eschrichtius robustus) Fetus Near Tofino, British Columbia	2
Behavioural Response of Harbour Seal (Phoca vitulina) Pups in Captivity to Food-Related Chemical Cues	2
A Walrus (Odobenus rosmarus) at the North Pole	2
Influence of Diel, Tidal, and Lunar Cycles on Acoustic Detections of Ganges River Dolphins in the Tidal Rupnarayan River of West Bengal, India	2
Stomach Contents of Three Sperm Whales (Physeter macrocephalus) Stranded on Andøya, Northern Norway	2
Fish Feeding and Rapid Foraging Behavior Switching by Gray Whales (Eschrichtius robustus) in California	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
Attempted Predation on Northern Elephant Seal Weanlings (Mirounga angustirostris) by Coyote (Canis latrans) in Point Reyes National Seashore, California	2
Automatically Counting Florida Manatees (Trichechus manatus latirostris) from Drone Images Using Object-Based Image Analysis	2
Letter to the Editor: 54th EAAM Symposium: Aquatic Mammal Welfare: Evolving Role of Our Community in a Rapidly Changing World	2

Capture-Release Protocol for Araguaian River Dolphins (Inia araguaiaensis) and Preliminary Physiological Parameters: An In Situ Approach for Research and Conservation	2
A Mother–Calf Humpback Whale (Megaptera novaeangliae) Pair from the Southeast Pacific Population Sighted in Mexican Waters	2
Biometrics of Stranded White-Beaked Dolphins (Lagenorhynchus albirostris) in Danish Waters	2
Life Histories of Satellite-Tracked Southern Right Whales Through Photo-Identification and Citizen Science in Patagonia, Argentina	2
Feeding Association Between Harbour Porpoise (Phocoena phocoena) and Flyshoot Fishing	2
Harassing Behavior by Short-Finned Pilot Whales (Globicephala macrorhynchus) Towards a Mother and Calf Sperm Whale (Physeter macrocephalus) Pair	2
Assessment of the Distribution and Coexistence of Two Sympatric Otter Species in the Chiloé Archipelago, Chile, Using Photo-Identification	2
Southern Elephant Seal (Mirounga leonina) Foraging Trips in the Southern Tip of South America	2
A New Simple Method for Age Determination of Harbour Porpoises (Phocoena phocoena)	2
Photo-Identification and Skin Lesion Prevalence of Bottlenose Dolphins (Tursiops erebennus) in the Waters of New York and New Jersey	2
Killer Whale (Orcinus orca) Male Carrying a Dead Calf	2
Micro-CT Scanning as a Practical Tool in Age Estimation of Beluga Whale (Delphinapterus leucas) Teeth and Estimated Ages of Western Chukchi Sea Belugas	2
Baseline Urinalysis of the Fully Marine, Herbivorous Dugong (Dugong dugon)	2
Errata Note: Common Cetacean Species Misidentifications	2
Temporary Hearing Threshold Shift in California Sea Lions (Zalophus californianus) Due to a Noise Band Centered at 32 kHz	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
The Introduction of a Novel Computerized Apparatus to California Sea Lions (Zalophus californianus)	2
Stable Carbon and Nitrogen Isotope Variation of Guadalupe Fur Seal (Arctocephalus townsendi) Guard Fur and Underfur: Implications for Ecological Interpretations	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
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
Observations of Mating Practice by Non-Sexually Mature Male Belugas (Delphinapterus leucas)	1
Indian Ocean Sighting of Shepherd’s Beaked Whale (Tasmacetus shepherdi) Helps Confirm Circumpolar Distribution in Southern Hemisphere	1
Blue Whale (Balaenoptera musculus) Mother–Calf Pair Behavioral Response to Vessel in the Southern California Bight	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
Phylogenetic Relationships Among Eastern Pacific Common Dolphins (Delphinus spp.)	1
Killer Whale (Orcinus orca) Acoustic Responses to Naval Sonar	1
Possible Pregnancy Toxemia in a Late-Term Twin-Pregnant Harbor Seal (Phoca vitulina)	1
Preliminary Results of Harbor Seal (Phoca vitulina) Salivary Progesterone During Breeding Under Human Care	1
First Record of a Piebald Bottlenose Dolphin (Tursiops truncatus) in Australian Waters	1
From Breeding to Feeding Grounds: Tracking the Survival of a White Humpback Whale (Megaptera novaeangliae)	1
Occurrence and Seasonal Residency of a Community of Common Bottlenose Dolphins (Tursiops truncatus) off Bimini, The Bahamas, 2006-2016	1
Bubble Bursts, a Potential Foraging Strategy for Bottlenose Dolphins (Tursiops truncatus) in Cardigan Bay	1
Killer Whale (Orcinus orca) Harassment on Humpback Whales (Megaptera novaeangliae) in Offshore Brazilian Waters	1
Behaviors of the Solitary Neotropical Otter (Lontra longicaudis) in Communal Latrines	1
Factors Influencing the Development of Human–Animal Relationships at SeaWorld Entertainment Parks	1
Ophthalmological Examination and Ophthalmosonography in Bottlenose Dolphins (Tursiops truncatus): Protocol Development and Physiological Ocular Findings	1
Auditory Health of Bowhead Whales (Balaena mysticetus) of the Bering-Chukchi-Beaufort Stock Based on Inner Ear Neuron Counts	1
First Reported Encounter of Bryde’s Whale and Interaction with Humpback Whales in the Gulf of Tribugá, Chocó, Northern Colombian Pacific	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
Monitoring Bottlenose Dolphin (Tursiops truncatus) Welfare During a Functional Neuroimaging Study	1
The First Two Detected Cases of Polythelia with Possible Polymastia in the Mediterranean Monk Seal (Monachus monachus)	1
Lessons from 40 Years as a Marine Scientist: Advice to a Young Lisa	1
Two Gray Whale (Eschrichtius robustus) Sightings off Hawaiʻi Island: The First Records for the Central Tropical Pacific	1
Histopathology, Immunohistochemical Diagnosis, and Management of Penicillin-Resistant Staphylococcus delphini Cutaneous Infection in a Bottlenose Dolphin	1
Demographic Insights and Spatial Distribution of the Commerson’s Dolphin (Cephalorhynchus commersonii) off the Kerguelen Archipelago (Southern Indian Ocean)	1
Spatiotemporal Variation of Stranded Marine Mammals in the Philippines from 2005 to 2022: Latest Stranding Hotspots and Species Stranding Status	1
Holistic Pinniped Welfare Index (HPWI): A Tool to Assess Welfare in Pinnipeds	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
Examination of Isotopic Signals to Determine Trophic Dynamics and Diet of Gulf of Maine Mysticetes Prior to an Oceanographic Regime Shift	1
Book Review: Sea Mammals: The Past and Present Lives of Our Oceans’ Cornerstone Species	1
Severity Scoring of Sperm Whale Behavioral Responses to an Operational Sonar Source Reveals Importance of Received Level and Source-Receiver Distance	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
Observations of the First Documented Indian Ocean Humpback Dolphin (Sousa plumbea) in the Northernmost Red Sea Gulf of Aqaba	1
Yawn-Like Behavior in a Beluga Whale (Delphinapterus leucas)	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
A Young Eden’s Whale (Balaenoptera edeni edeni) Wandering in a Busy International Container Port	1
Temporal and Spatial Distribution of Harbor Seal (Phoca vitulina) Risk of Entanglement in Gillnets Along the Norwegian Coast	1
Predation of a Sperm Whale (Physeter macrocephalus) by Killer Whales (Orcinus orca) in Guanaja, Honduras	1
Causes of Mortality in Harbor (Phoca vitulina) and Gray (Halichoerus grypus) Seals in Denmark	1
Rare Sighting and Visual Assessment of a Free-Ranging Flukeless Bottlenose Dolphin (Tursiops truncatus) in Galveston Bay, Texas	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
Observations of Adult–Calf Nonreproductive Copulatory Behavior in North Atlantic Right Whales (Eubalaena glacialis)	1
Synchronous Swimming and Diving Behaviour in a Group of Fin Whales (Balaenoptera physalus)	1
Determination of Metal and Metalloids in Bottlenose Dolphins’ (Tursiops truncatus) Skin from the Yucatan Peninsula, Mexico	1
Co-Occurrence Between Salmon Farming, Alien American Mink (Neogale vison), and Endangered Otters in Patagonia	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
Evidence of a Predatory Interaction of a Cookiecutter Shark (Isistius brasiliensis) on Galapagos Fur Seals (Arctocephalus galapagoensis)	1
Humpback Whale Calf Resighted After Stranding Rescue: Unprecedented Confirmation Using Drone Monitoring	1
Necrocoitus in Common Bottlenose Dolphins (Tursiops truncatus) near Sarasota, Florida	1
Affiliative Behavior After Aggressions in Common Bottlenose Dolphins (Tursiops truncatus)	1