Killer whales groom each other with pieces of kelp

(science.org)

84 points | by noleary 4 days ago ago

48 comments

  • robaato 12 hours ago

    Nice article: https://www.theguardian.com/commentisfree/2025/jun/30/orca-k... These supposedly serious cetaceans have been spotted massaging each other with kelp stalks. This is the sort of performative nonsense you’d expect from dolphins

    • libraryofbabel 7 hours ago

      My absolute favorite Orca culture story (yes they have transmissible culture!) is the “salmon hat craze,” where the Orcas carry dead salmon around on their heads, apparently just for fun: https://en.wikipedia.org/wiki/Salmon_hat

      When you’re the apex predator of the world’s oceans you can get away with all sorts of silly nonsense!

    • swores 10 hours ago

      Killer Whales, aka Orcas, actually are dolphins!

      And they got their name as a mistranslation into English - if I remember correctly they were originally named in Spanish as "killers of whales" or "whale killers", because they do that

      • ceph_ 4 hours ago

        All dolphins are whales. Not all whales are dolphins. It's a square / rectangle situation.

        Orcas are indeed dolphins, and also whales.

      • thaumasiotes 2 hours ago

        > if I remember correctly they were originally named in Spanish as "killers of whales" or "whale killers", because they do that

        Wiktionary supports that etymology, and it is generally a high-quality source for etymology, but it's troubling that this one isn't cited.

      • Nunanol 6 hours ago

        [dead]

  • metalman 15 hours ago

    killer whales also share food, carrying various food items in the mouths, aaaaaand they are trying to share, with us.....like , in the open ocean, wild whales, not some marine land stunt, nope, they are throwing food at US!, to see what WE do....awsome freeky

    https://www.discoverwildlife.com/animal-facts/marine-animals...

    https://www.livescience.com/animals/orcas/wild-orcas-offer-h...

    • yard2010 11 hours ago

      Humans think they are whale food is just the same as the cat in our yard that sure I'm gonna make a goulash from him instead of serving him some.

      • swores 10 hours ago

        Would you mind rephrasing your comment, as currently I really don't understand what you're trying to say at all...

        edit: I originally wrote out a long comment about exactly why your comment doesn't make sense to me, but after posting it I felt it was ridiculously long for its purpose, so if you want to waste time reading it you can find it here - https://pastebin.com/Y11P8ETs - but I think asking you to explain what you meant more clearly is enough for here :)

        • dpassens 10 hours ago

          GP's comment reads reasonably clear to me: humans fearing orcas might eat them are about as rational as the cat visiting GP's garden, which also seems to be convinced GP wants to harm rather than feed it.

          • swores 10 hours ago

            Ah, OK that does now make sense to me, thanks.

            I think I didn't manage to see that meaning because the comment it was replying to had nothing to do with humans thinking orcas want to eat them, it was about orcas bringing food (like dead fish) to give to the humans. So more like a pet cat bringing a dead mouse to its owner than a cat in the garden fearing that the human wants to eat it?

            • shayway 9 hours ago

              For what it's worth I was lost too. Even with the explanation it took a few minutes to fully parse.

          • dfxm12 8 hours ago

            At best, it is missing a verb. This is compounded by it's poor grammar (or poor style) and the fact that it is a non-sequitor to the comment it replied to. Someone can get reasonably lost reading it.

            ETA: swores mentions this in their pastebin

          • mr_toad 8 hours ago

            People do, or have eaten cats, mainly when they’re starving. I’m not sure I’d want to be in the water with a starving Orca.

            • quickthrowman 7 hours ago

              I’d be fine in the water near an orca in the wild as long as there aren’t any seals around. There is one alleged documented attack by non-captive orcas on humans and that guy claims he was near seals at the time.

              I’d probably be nervous if I was sailing on the Atlantic Iberian coast and saw orcas, they’ve been ramming and pushing rudders and fucking around with sailboats, no thanks.

              https://en.wikipedia.org/wiki/Iberian_orca_attacks

    • subjectsigma 6 hours ago

      I watched the video in the first link and it’s a pretty extreme stretch to say it was “offering food” to the human holding the camera. There was barely any indication it saw the person.

      The second video looked significantly more promising, however the video cuts away before we can actually see what the whale does.

      Unless I watch a third video and start seeing some very clear dog-playing-fetch-like behavior, I’m marking this one as highly implausible.

    • jojobas 14 hours ago

      Australian whalers "hired" orcas to help round up whales and paid in lips/whatever other parts orcas liked most.

      https://killerwhalemuseum.com.au/old-tom/

      • gpderetta 7 hours ago

        More on this: https://en.wikipedia.org/wiki/Killer_whales_of_Eden,_New_Sou...

        I'm not sure it is so much the humans hiring the whales as opposed of the whales hiring the humans :D

      • arethuza 14 hours ago

        The BBC "Strong Message Here" podcast mentioned orcas removing the livers from sharks to eat and joked about "de-liver" - now every time I see "deliver" I think of liver removal...

        • zabzonk 13 hours ago

          If only they didn't live in the sea, and had developed frying pan technology, they could cook shark liver and kelp!

          But to me, the interesting question is how the orcas worked out how the great whites had livers in the first place, and why they are the best bits (big bits) to eat? I hope the are not going to investigate mine, but they don't seem interested - yet. See two orcas not eating two teeny humans: https://www.youtube.com/shorts/y8iipFTBanc

          • adrian_b 12 hours ago

            Fortunately, most orca families appear to have very specialized tastes in food, different from family to family, and quite complex strategies for acquiring the exact kind of food that they prefer.

            As long as they can still obtain their chosen food, it seems that they do not have any incentives for experimenting with alternative foods, like teeny humans.

            When whales, seals, penguins, sharks etc. will disappear, that might change.

            • zabzonk 12 hours ago

              Understand what you are saying - we are not fatty or flavoursome enough. But you have to ask - how do they know that?

              I can understand why (for example) big cats are scared of guys carrying AK47s (or even a pointed stick - hello, Maasai), and will run away. But the orcas really can't experience that, and don't seem scared of us at all. Lots of examples of sperm whales attacking humans (see Moby Dick) but none of orcas doing it. I know there are those yacht-bothering things off Spain.

              It is strange. Unless they are going to leave us (Douglas Adams) or are just waiting to be our inheritors, which is looking more and more likely.

              • santiagolarrain 8 hours ago

                I'm interested in those examples of sperm whales attacking humans. I believe those might have been defending and not actively attacking. It is said that Mocha Dick was docile until attacked. And I think that an animal that defends itself when attacked, is a different game. I haven't heard of cases of people hunting down and fishing Orcas, like we did with Sperm Whales. Perhaps we would have had Orcas attack then?

              • adrian_b 9 hours ago

                There is a strong correlation between the behavior an animal will exhibit against a human and the behavior it will exhibit against other animals of its own species.

                The animals which do not tolerate other animals of their own species and which will attack them and fight with them are also very likely to attack humans when they believe that humans have invaded their personal space. For example, an adult bear will never be truly friendly with a human, even with a human that has raised it as a cub, because adult bears are never friendly with other bears, but they attack any intruders. On the other hand, a wolf raised by a human can become tame and attached to the human, like a wild wolf would behave towards its real parents.

                Similarly, male sperm whales fight viciously with any other male sperm whales and they also do not hesitate to attack any boats with humans that harass them.

                AFAIK, intra-specific fighting is not frequent among orcas, but they are used to have good relations between them, even with some from different pods. This may explain their lack of aggressivity against humans, as long as they are not perceived as a possible prey.

            • MadnessASAP 8 hours ago

              Its not that Orcas don't eat people, they don't leave witnesses. People disappear in the ocean all the time

          • toast0 8 hours ago

            > But to me, the interesting question is how the orcas worked out how the great whites had livers in the first place, and why they are the best bits (big bits) to eat?

            The liver is like right there inside the shark. Open it up and have a look, and take a small bite of all the bits and figure out which tastes best. Might need to cooperate with a friend.

          • andrewflnr 8 hours ago

            In principle, they could eat the whole shark and notice their favorite parts. That must have happened at least once. In practice, they probably learn it socially.

    • perrygeo 11 hours ago

      I've always found it strange how the study of human evolution focuses on the brain size as a proxy for the capacity for intelligence. Yet we have mammals walking and swimming around us with larger brains than us. Shouldn't the default assumption be that they too are highly intelligent, sentient beings? Human exceptionalism is a hell of a bias.

      • swores 9 hours ago

        Isn't the idea of brain size being a useful proxy for intelligence quite outdated?

        Partly because there are animals with larger brains which we now know are not very intelligent, with no assumptions needed, and partly because some of the most intelligent non-primate animals that we know of actually have very small brains - like crows and other birds in the corvid family.

        • adrian_b 8 hours ago

          While brain size is not a certain sign of intelligence, it is correlated with intelligence, especially when the comparison is done between more closely related animals, which have similar brain structures.

          The largest brains belong to elephants and cetaceans, and both are among the most intelligent animals. However comparing their brain size to that of primates would not provide useful information, because for both elephants and cetaceans large parts of their brains are dedicated to the control of various functions of their large bodies that we do not consider as relevant for "intelligence", including things like trunk control and echolocation.

        • xeonmc 8 hours ago

          It's as they say -- Don't judge a chip by its die size.

  • wiether 14 hours ago

    Unrelated but as an ESL, I always felt uncomfortable with the name "killer whales".

    Not only "whales" is inappropriate according to their scientific classification, but also "killer" seems prejudicial since it inspire unwarranted fear.

    • amelius 13 hours ago

      https://www.theatlantic.com/science/archive/2023/06/orca-kil...

      > Orcas kill for sport. They push, drag, and spin around live prey, including sea turtles, seabirds, and sea lions. Some go so far as to risk beaching themselves in order to snag a baby seal—not to consume, but simply to torture it to death.

      We might as well call them the assholes of the sea.

      • _Algernon_ 12 hours ago

        Cats of the sea.

        Is them attacking luxury yachts the equivalent of my cat knocking down glasses of water?

        • bodhiandphysics 11 hours ago

          more like wolves of the sea, since they hunt in packs and often attack prey larger than them.

          • astura 11 hours ago

            Wolves hunt to eat. Housecats hunt to eat but also for sport and fun and will very often not even consume their prey, as they are well fed by their owners. That's where the "cats of the sea" comment came from. Wolves are very risk-averse, and only hunt when they need to eat.

            >Some go so far as to risk beaching themselves in order to snag a baby seal—not to consume, but simply to torture it to death.

            This is very much housecat behavior.

            • HelloMcFly 9 hours ago

              Given how intelligent we believe them to be, it seems likely to me that mental stimulation (including perhaps "recreation") when not acquiring food is quite meaningful to them.

      • santiagolarrain 8 hours ago

        Some say they do it to teach their young how to hunt and stuff. That is educational. Might be true, since is a very social animal that live and hunt in packs of 3 generations.

    • 0x737368 13 hours ago

      The reason they're called killer whales is because sailors saw them kill whales, so they were called whale killers and then there was a switch of the two terms.

    • raincole 13 hours ago

      Especially when the alternative is so easy to spell and pronounce...

    • adrian_b 13 hours ago

      There is the alternative to call them orcas, which I prefer and which is also a much older name for them, being already used by Pliny the Elder, two millennia ago.

      It would have been simpler if the word "whale" would have been applied only to baleen whales, but unfortunately in the Old English tradition the word "whale" was used for any big marine animal, e.g. not only for sperm whales, but even for walruses.

    • astura 11 hours ago

      > "killer" seems prejudicial since it inspire unwarranted fear.

      They are apex predators. I don't think it's prejudicial to call an apex predators "killer." It's accurate.

      Do you still think it's "prejudicial" after seeing how they actually behave? - https://youtube.com/watch?v=35yly16M8p4

      Beyond that, it's not inaccurate to call them whales. They belong to the same family as dolphins, which are toothed whales.

    • boffinAudio 13 hours ago

      Its appropriate, inasmuch as they are an apex predator, and spend a majority of their lives hunting for food - as opposed to many other whales which filter-feed as a harvesting mechanism ..

    • liveoneggs 11 hours ago

      Murder Dolphins!

    • kingkawn 12 hours ago

      Other languages cannot be subjected to logic.

    • 13 hours ago
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    • bigbacaloa 2 hours ago

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