Toothed whales

Meet the Australian Snubfin Dolphin – An Edemic and Threatened Species

/ / Whale of the Month / , , ,

The Australian snubfin dolphin (Orcaella heinsohni) is one of Australia’s only endemic dolphin species, identified as a new species in 2005. This small dolphin is adorable, but it faces conservation threats due to its small population and coastal habitat preference. So this month, let’s celebrate the Australian snubfin dolphin and the 25th Biennial Conference on […]

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Can Whales Eat and Swallow Humans?

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Whales are unlikely to swallow humans due to their anatomy and behavior. Baleen whales, with small esophagi, filter-feed on tiny prey, while toothed whales have larger throats but do not treat humans as prey. Encounters are generally non-aggressive and driven by curiosity. Historical anecdotes and myths exaggerate these possibilities.

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Ramari’s beaked whale, a mysterious discovery

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Humans know more about space than the ocean. In 2011, a pregnant beaked whale named Nihongore stranded in New Zealand, initially thought to be a True’s beaked whale. DNA and skull analyses revealed it was a new species, Ramari’s beaked whale, named after Māori whale expert Ramari Stewart, highlighting Indigenous contributions to whale science.

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Whales and Dolphins Uniting for Survival, Bounty, or Companionship?

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Cetaceans like whales, dolphins, and porpoises form interspecies associations for predator deterrence, predator avoidance, foraging, and socialization. These behaviors can involve thousands in a pod, with practices like coordinated feeding and shifts for vigilance against predators. Such alliances may also have aspects like alloparenting and possible interspecies communication, showcasing complex social dynamics and cooperative strategies among different species within the marine environment.

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Toxic chemicals from plastics found in Norwegian marine mammals

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Plasticizers added to plastics give them their properties, but these chemicals can leach into the oceans and harm marine life. Recent studies found plastic chemicals in marine mammals in Norway, raising concerns about their prevalence and impact. To help, reduce plastic use, recycle, and support policies to ban harmful chemicals and protect ocean creatures.

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Why are baby whales and dolphins born with whiskers?

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Vibrissae, or whiskers, are found in most mammals, including cetaceans like dolphins, whales, and porpoises. These were likely inherited from terrestrial ancestors, serving as sensory organs during these species’ evolution from land to water. While in many cetaceans, whiskers disappear as they mature, leaving behind small cavities termed ‘vibrissal crypts’, certain species, such as the Amazon river dolphin, retain them, helping in food detection and possibly electroreception.

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Harbor porpoise calves ingest toxic chemicals through their mother’s milk

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Persistent organic pollutants (POPs), though banned, remain a threat to marine ecosystems, particularly damaged the harbor porpoises in the North Sea. A study found that these porpoises consume high concentrations of such pollutants while feeding, compromising their health and reproduction. Transferred from mothers to calves through lactation, these chemicals, such as PCBs, pose a major concern for the future population of these marine mammals. This calls for enhanced conservation strategies and more responsible individual actions.

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Toxic Menus: Contaminants Threaten the Health of North Atlantic Killer Whales

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In a ground-breaking new study just published in Environmental Science & Technology, a disturbing picture of contamination among North Atlantic killer whales has emerged. Persistent organic contaminants (POPs), including polychlorinated biphenyls (PCBs), pesticides (DDTs, Chlordanes, etc.), and flame retardants, were detected at alarming levels in these apex marine predators. This study sheds light on the

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Unlocking the Secrets of Female Common Dolphin Reproduction in New Zealand

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Understanding the life history of organisms helps us learn how they grow and develop traits that help them survive in their environment. It also reveals how vulnerable a population can be if certain behaviors and traits put them at risk of extinction. In our rapidly changing world, studying a species’ life history is important to

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