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 2021-11-01 to 2025-11-01.)

Article	Citations
Mapping the Exposure of Pantropical Spotted Dolphins and Common Bottlenose Dolphins to Different Categories of Vessel Traffic in Maui Nui, Hawai‘i	14
Records of Postmortem Attentive Behavior on an Irrawaddy Dolphin (Orcaella brevirostris) Calf and Implications for Conservation in Kuching Bay, Sarawak, East Malaysia	13
Molecular Identification of a Southern Elephant Seal (Mirounga leonina) from the Nayarit Coast, Mexico	10
Purposeful Porpoise Training at Fjord&Bælt: The First 25 Years	10
Recent Accidental Entanglements of Humpback Whales (Megaptera novaeangliae) in the Colombian Pacific	9
Cetacean Mortality Related to Ship Traffic in the Mexican Central Pacific	9
Rare Observation of a Living Southern Elephant Seal (Mirounga leonina) at Terra Nova Bay, Victoria Land Coast, Ross Sea, Antarctica	8
Geographic Distribution of North Atlantic Humpback Whales (Megaptera novaeangliae) with Fluke Scars Caused by Killer Whales (Orcinus orca)	8
Estimating Population Abundance of Atlantic Bottlenose Dolphins (Tursiops truncatus) in the Coastal Waters of Palm Beach County, Southeastern Florida	8
The Human Dimensions of Small Cetacean Conservation: 2022 Workshop Report, Nuremberg, Germany	8
Stranding of Beaked Whales in Santa Cruz Province, Southern Patagonia, Argentina (1895-2023)	7
Hidden on the Edge: Franciscana Dolphins (Pontoporia blainvillei) Are Highly Overlapped with a Marine Protected Area at the Limit of a Management Area	7
An Unusual Record of a Marine Dolphin (Sotalia guianensis) Being Scavenged by Jaguar (Panthera onca) at the Northern Brazilian Amazon	7
Modeling Suitable Habitats of Indo-Pacific Humpback Dolphins (Sousa chinensis) in a Highly Urbanized Bay	6
First Sighting of Longman’s Beaked Whale (Indopacetus pacificus) off the Chichijima Islands, Ogasawara (Bonin) Islands, Japan	6
Neonatal Facial Pigmentation of Pygmy Killer Whales (Feresa attenuata): A Description from Repeated Observations of Individuals in the Wild	6
In Memoriam: Isidore “Izzy” D. Szczepaniak (1950-2021)	6
Evidence that Humpback Whales (Megaptera novaeangliae), Including Calves, Use Isolated Johnston Atoll in the Tropical Central North Pacific	6
Hematology and Blood Chemistry Reference Intervals for Antillean Manatees (Trichechus manatus manatus) in Colombia	6
Evaluating the Use of Diazepam in Stranded Dolphins and Porpoises for Husbandry and Veterinary Purposes	6
Southern Right Whale Sightings and Two Incidences of Interaction with Peale’s Dolphins in Los Ríos Region, Southern Chile	5
Innovative Machine Learning and Stakeholder Method to Assess Bycatch of Tursiops truncatus in the Southern Gulf of Mexico	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
Account of a Solitary Humpback Whale (Megaptera novaeangliae) Bubble-Net Feeding in the Moray Firth, Northeast Scotland	5

Natural Barrier Feeding Technique in Megaptera novaeangliae in Central Coastal Area of Golfo San Jorge, Patagonia, Argentina	5
Allomaternal Care and Allonursing Behaviors by a Primiparous Bottlenose Dolphin	4
Group Dynamics and Social Structure of the Inia araguaiaensis in the Tocantins River, Brazilian Cerrado	4
Orcas (Orcinus orca) Use Different Strategies to Prey on Rays in the Gulf of California	4
Behavioral, Pathomorphological, and Clinical Observations of a Young Harbor Porpoise (Phocoena phocoena) with Congenital Hemihydranencephaly	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
Prevalence, Composition, and Behaviour of Humpback Whale (Megaptera novaeangliae) Groups Containing Multiple Mother–Calf Pairs in East Australia	4
Dyadic Interspecific Interaction Between a Harbour Seal (Phoca vitulina) and a Eurasian Otter (Lutra lutra)	4
An Antarctic Minke Whale (Balaenoptera bonaerensis) Live-Stranding in Venezuela: First Record for the Caribbean Sea	4
Arabian Sea Humpback Whale (Megaptera novaeangliae) Singing Activity off Netrani Island, India	3
Ganglion Cell Topography and Retinal Resolution in an Irrawaddy Dolphin (Orcaella brevirostris)	3
First Record of Sowerby’s Beaked Whale (Mesoplodon bidens) on México’s Coast and the Caribbean Sea	3
Comparative Muscle Physiology of Ringed (Pusa hispida), Bearded (Erignathus barbatus), and Spotted (Phoca largha) Seals from the Bering and Chukchi Seas	3
Erratum: The Survival of a Flukeless Juvenile Dolphin (Tursiops aduncus) in the Wild	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
Sea Otters (Enhydra lutris) Found in the Stomach of a Stranded Killer Whale (Orcinus orca) in the Commander Islands, Western North Pacific	3
New Record of California Coastal Bottlenose Dolphins (Tursiops truncatus) in Offshore Waters	3
Two Dolphin–Vessel Collisions in Mexican Waters: Potential Implications for Dolphin Behavior and Boating Safety	3
Defying Evolution: Observations of a Mouth-Breathing Bottlenose Dolphin (Tursiops truncatus)	3
Indo-Pacific Bottlenose Dolphin (Tursiops aduncus) Repeatedly Self-Confining in a Traditionally Built Basin Off Jeju Island, Republic of Korea	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
ESOMM-2024 Programme: 8th International Meeting on the Effects of Sound in the Ocean on Marine Mammals	3
Endogenous Ouabain in Human and Animal Models of Hypoxia	3
Contact Exchanges in Bottlenose Dolphin Mother–Calf Pairs	3
Evidence of Large Whale Socio-Sexual Behavior in the New York Bight	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
Life Histories of Satellite-Tracked Southern Right Whales Through Photo-Identification and Citizen Science in Patagonia, Argentina	2
Molt Chronology of a Male Mediterranean Monk Seal (Monachus monachus) from the Eastern Mediterranean Sea	2
Biometrics of Stranded White-Beaked Dolphins (Lagenorhynchus albirostris) in Danish Waters	2
Automatically Counting Florida Manatees (Trichechus manatus latirostris) from Drone Images Using Object-Based Image Analysis	2
Assessment of the Distribution and Coexistence of Two Sympatric Otter Species in the Chiloé Archipelago, Chile, Using Photo-Identification	2
Feeding Association Between Harbour Porpoise (Phocoena phocoena) and Flyshoot Fishing	2
Observations of a Benthic Foraging Behavior Used by Common Bottlenose Dolphins (Tursiops truncatus) in Barataria Basin, Louisiana, USA	2
Assessing Residency and Site Fidelity in Bottlenose Dolphins: A Literature Review and Bibliometric Analysis	2
Dr. Roger Payne: A Tribute	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
Stomach Contents of Three Sperm Whales (Physeter macrocephalus) Stranded on Andøya, Northern Norway	2
A Wanderer in the Mediterranean Sea: The Case of a Humpback Whale (Megaptera novaeangliae) from the West Indies	2
A Beluga (Delphinapterus leucas) off the West Coast of Baja California Sur, Mexico: The Southernmost Record Far from Its Typical Distribution Area	2
Errata Note: Common Cetacean Species Misidentifications	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
Harassing Behavior by Short-Finned Pilot Whales (Globicephala macrorhynchus) Towards a Mother and Calf Sperm Whale (Physeter macrocephalus) Pair	2
The Introduction of a Novel Computerized Apparatus to California Sea Lions (Zalophus californianus)	2
Whistle Characteristics of the Rough-Toothed Dolphin (Steno bredanensis) in the Canary Islands	2
Herd Size Dynamics and Observations on the Natural History of Dugongs (Dugong dugon) in the Andaman Islands, India	2
Revillagigedo Archipelago, Mexico: A Probable Calving Area for Common Bottlenose Dolphins (Tursiops truncatus)	2
Largest Mortality Event to Date of California Sea Lions in Mexico Might Be Linked to a Harmful Algal Bloom	2

Curly Tails: Rare Occurrence of Bent Flukes in Free-Ranging Cetaceans	2
Temporary Hearing Threshold Shift in California Sea Lions (Zalophus californianus) Due to a Noise Band Centered at 32 kHz	2
A Walrus (Odobenus rosmarus) at the North Pole	2
Presence of Guadalupe Fur Seals (Arctocephalus philippii townsendi) at Isla Roca Partida, Revillagigedo Archipelago, México	2
Northern Range Expansion of California Coastal Bottlenose Dolphins (Tursiops truncatus)	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
Semen Quality and Electron Microscopy of Captive Irrawaddy Dolphin (Orcaella brevirostris) Sperm	2
Osseous Anomalies in a Risso’s Dolphin (Grampus griseus)	2
Location Tag Adapted from Fitness Tracker Watch, Tested on Humpback Whales (Megaptera novaeangliae)	2
First Record of a Blainville’s Beaked Whale (Mesoplodon densirostris) in Cuba	2
First Bowhead Whale (Balaena mysticetus) Sighting in Southeast Alaska: An Extralimital Southern Excursion of this Arctic-Adapted Species	2
Attempted Predation on Northern Elephant Seal Weanlings (Mirounga angustirostris) by Coyote (Canis latrans) in Point Reyes National Seashore, California	2
Observations of Burmeister’s Porpoise (Phocoena spinipinnis) in the Northern Coast of Peru	1
Preliminary Results of Harbor Seal (Phoca vitulina) Salivary Progesterone During Breeding Under Human Care	1
Hunting, Fighting, or Playing with Bubbles: Possible Usage and Acoustic Characteristics of Bubble Burst Sounds Produced by the Amazon River Dolphin (Inia geoffrensis)	1
Demographic Insights and Spatial Distribution of the Commerson’s Dolphin (Cephalorhynchus commersonii) off the Kerguelen Archipelago (Southern Indian Ocean)	1
Behaviors of the Solitary Neotropical Otter (Lontra longicaudis) in Communal Latrines	1
Possible Pregnancy Toxemia in a Late-Term Twin-Pregnant Harbor Seal (Phoca vitulina)	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
Causes of Mortality in Harbor (Phoca vitulina) and Gray (Halichoerus grypus) Seals in Denmark	1
Recovery of a Mid-Gestational Gray Whale (Eschrichtius robustus) Fetus Near Tofino, British Columbia	1
Baseline Urinalysis of the Fully Marine, Herbivorous Dugong (Dugong dugon)	1
Examination of Blubber Fatty Acids in Pregnant and Lactating Alaskan Harbor Seals (Phoca vitulina)	1
Evidence of a Predatory Interaction of a Cookiecutter Shark (Isistius brasiliensis) on Galapagos Fur Seals (Arctocephalus galapagoensis)	1
Phylogenetic Relationships Among Eastern Pacific Common Dolphins (Delphinus spp.)	1
Book Review: Sea Mammals: The Past and Present Lives of Our Oceans’ Cornerstone Species	1
Holistic Pinniped Welfare Index (HPWI): A Tool to Assess Welfare in Pinnipeds	1
Auditory Health of Bowhead Whales (Balaena mysticetus) of the Bering-Chukchi-Beaufort Stock Based on Inner Ear Neuron Counts	1
Severity Scoring of Sperm Whale Behavioral Responses to an Operational Sonar Source Reveals Importance of Received Level and Source-Receiver Distance	1
First Record of a Piebald Bottlenose Dolphin (Tursiops truncatus) in Australian Waters	1
Killer Whale (Orcinus orca) Acoustic Responses to Naval Sonar	1
Two Gray Whale (Eschrichtius robustus) Sightings off Hawaiʻi Island: The First Records for the Central Tropical Pacific	1
Signature Calls in West Indian Manatee (Trichechus manatus manatus)?	1
An Agent-Based Model of Human–Whale Interactions in the North Atlantic	1
Indian Ocean Sighting of Shepherd’s Beaked Whale (Tasmacetus shepherdi) Helps Confirm Circumpolar Distribution in Southern Hemisphere	1
Antarctic Minke Whale (Balaenoptera bonaerensis) Bio-Duck Call Detection in the Río de la Plata, Uruguay	1
Affiliative Behavior After Aggressions in Common Bottlenose Dolphins (Tursiops truncatus)	1
First Stranding Record of Fin Whale (Balaenoptera physalus) in the Mexican Waters of the Gulf of Mexico	1
Evidence for an Oceanic Population of Killer Whales (Orcinus orca) in Offshore Waters of California and Oregon	1
Killer Whale (Orcinus orca) Male Carrying a Dead Calf	1
Observations of the First Documented Indian Ocean Humpback Dolphin (Sousa plumbea) in the Northernmost Red Sea Gulf of Aqaba	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
Histopathology, Immunohistochemical Diagnosis, and Management of Penicillin-Resistant Staphylococcus delphini Cutaneous Infection in a Bottlenose Dolphin	1
Occurrence and Seasonal Residency of a Community of Common Bottlenose Dolphins (Tursiops truncatus) off Bimini, The Bahamas, 2006-2016	1
From Breeding to Feeding Grounds: Tracking the Survival of a White Humpback Whale (Megaptera novaeangliae)	1
Spatiotemporal Variation of Stranded Marine Mammals in the Philippines from 2005 to 2022: Latest Stranding Hotspots and Species Stranding Status	1
Co-Occurrence Between Salmon Farming, Alien American Mink (Neogale vison), and Endangered Otters in Patagonia	1
Factors Influencing the Development of Human–Animal Relationships at SeaWorld Entertainment Parks	1
Bubble Bursts, a Potential Foraging Strategy for Bottlenose Dolphins (Tursiops truncatus) in Cardigan Bay	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
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
Killer Whale (Orcinus orca) Harassment on Humpback Whales (Megaptera novaeangliae) in Offshore Brazilian Waters	1
The First Two Detected Cases of Polythelia with Possible Polymastia in the Mediterranean Monk Seal (Monachus monachus)	1
Blue Whale (Balaenoptera musculus) Mother–Calf Pair Behavioral Response to Vessel in the Southern California Bight	1
Capture-Release Protocol for Araguaian River Dolphins (Inia araguaiaensis) and Preliminary Physiological Parameters: An In Situ Approach for Research and Conservation	1
Yawn-Like Behavior in a Beluga Whale (Delphinapterus leucas)	1
A Mother–Calf Humpback Whale (Megaptera novaeangliae) Pair from the Southeast Pacific Population Sighted in Mexican Waters	1
Surface and Underwater Observation of a Humpback Whale (Megaptera novaeangliae) Birth in Progress off Lahaina, Maui, and Subsequent Encounter of the Female with a Healthy Calf	1
Potential California Sea Lion (Zalophus californianus) Parturitions After the Pupping Season	1
Temporal and Spatial Distribution of Harbor Seal (Phoca vitulina) Risk of Entanglement in Gillnets Along the Norwegian Coast	1
Necrocoitus in Common Bottlenose Dolphins (Tursiops truncatus) near Sarasota, Florida	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
Examination of Isotopic Signals to Determine Trophic Dynamics and Diet of Gulf of Maine Mysticetes Prior to an Oceanographic Regime Shift	1