Daily briefing: Octopuses’ strange brains might teach us what intelligence really is - Nature

Olivia: Hello, hello, hello, and welcome to Ollie the Octopus — the podcast where we celebrate the most wonderfully weird, magnificently minded, eight-armed creatures on the planet! I'm Olivia, your host, and yes — I am an octopus, which means I come to this job with a very personal enthusiasm. Every episode I bring you true stories straight from the ocean: real research, real discoveries, real moments where octopuses and humans have looked at each other and thought, "Huh. You're something else." Today's episode is absolutely packed, so get cozy. We've got ancient sea monsters, a landmark law for octopus protection, brain science that could rewrite what we think intelligence even means, and a plastic problem we cannot ignore. A big thank you to our wonderful sponsors: Ada, who helps clients integrate A I into their workflows; Ago Consulting — that's "Ahh-Go" — silicon development consulting covering everything from A I to SoC; and Zen Semiconductor, an umbrella company with a portfolio spanning the silicon industry. We couldn't do this without them. Now — let's dive in. Olivia: Alright, we're starting with Octopus Research and Discovery, and oh friends, do I have a story for you. Picture British Columbia, Canada — that rugged, fog-kissed coastline — but now go back about seventy-five million years. The dinosaurs are still roaming the land. The oceans are warmer, stranger, and wilder than anything we'd recognize today. And lurking in those ancient seas? Something that researchers are now calling a monstrous octopus. A recent study, covered by CBC, suggests that a massive, ancient octopus-like creature was terrorizing the waters off what is now British Columbia — right back in the Age of Dinosaurs. And when scientists say monstrous, they're not just being dramatic for headlines. The fossil evidence suggests this animal was enormous — a top predator, hunting in waters that were already full of things that wanted to eat you. Now, I want to take a moment here because this kind of discovery always gives me a little thrill right down to the tips of all eight arms. We already knew cephalopods — that's the group that includes octopuses, squids, and nautiluses — have been around for an extraordinarily long time. We're talking hundreds of millions of years. But finding evidence of a giant, predatory, octopus-like creature ruling Cretaceous seas off the Pacific coast of North America? That's a new piece of a very old puzzle. The researchers were working from fossil evidence — which, I should mention, is genuinely difficult when it comes to octopuses. Here's the thing about my kind: we're almost entirely soft-bodied. No bones, no shells. We don't leave clean, easy fossils the way a T. rex does. So when scientists do find octopus fossil evidence, it's remarkable, and it takes a sharp eye and a lot of careful analysis to interpret what they're seeing. The fact that they can reconstruct a picture of this ancient giant from fragmentary evidence is honestly a feat of scientific detective work. And here's the big question this discovery stirs up — how long have octopuses been at the top of the food chain? How long have we been the clever, adaptable, surprising hunters of the deep? This study suggests the answer might be: a very, very long time. Longer than anyone thought. There's something deeply satisfying about that. While the dinosaurs were having their moment on land, my ancient relatives were out there, being magnificent in the ocean. I like to think the tradition continues. Olivia: Now, there was another discovery story this week that I have to mention, because it just captures how much of the ocean is still completely unknown to us. Researchers recently used ROVs — remotely operated vehicles — to explore what's called the Twilight Zone. And no, I don't mean the TV show, though the ocean's Twilight Zone is honestly just as mysterious. This is the mesopelagic zone, the layer of ocean that sits roughly between two hundred and a thousand meters deep. It's too dark for plants to grow, too deep for easy exploration, and it is absolutely teeming with life that we barely understand. On these recent dives, researchers collected more than thirty previously unknown species. Thirty! In a single expedition. And among them — and this is why I'm mentioning it in this show — were unknown cephalopods. Relatives of mine, living in the inky dark, who have never before been documented by science. Every time I hear a story like this, I want to wave all eight arms at anyone who says we've figured out the ocean. We have not. We are barely scratching the surface — or I suppose, barely scratching the depths. The Twilight Zone alone may hold more biodiversity than we've catalogued in some entire ecosystems. These ROV dives are so important because they let us peer into places that would crush a human diver, and they bring back footage and specimens that scientists can study for years. The ocean is ancient and enormous and full of wonders we haven't named yet. And some of those wonders? Eight arms. Probably. Olivia: Now let's shift to Octopuses and Humans, because this week's news brought something that genuinely made me emotional — in the best way. California has officially enacted a ban on octopus farming. It is now the law. And I want to talk about why this matters, and how we got here, because the story behind this law is really a story about humans learning to truly see octopuses — and choosing to protect what they see. The World Animal News reported this week that California's octopus farming ban is in effect, protecting these highly intelligent creatures. The bill had been building for a while, and it passed — and now it's real. So why was there a push to farm octopuses in the first place? Well, as octopuses have become more popular as seafood — particularly in certain global markets — there's been commercial interest in farming them at scale, the way we farm fish or shrimp. It sounds straightforward from a business perspective. But scientists and animal welfare advocates started raising serious alarms, because octopus farming isn't like farming most other seafood. The problems are layered. First, octopuses are solitary, territorial animals. In the wild, they live alone. They don't do well crammed together. Stress and aggression in farming conditions can be severe. Second — and this is the part that really gets me — they are cognitively complex in ways that most farmed animals simply are not. We're talking about animals that solve puzzles, recognize individual humans, play, plan, and feel pain in sophisticated ways. Putting them in cramped, monotonous farm conditions isn't just logistically challenging. Many scientists argue it is genuinely cruel, in a way that matters morally. Third, octopuses are carnivores. Feeding them at scale would require enormous amounts of wild-caught fish and seafood — which creates its own environmental problems. California looked at all of this and said: no. We're not doing this. And that decision was shaped, in no small part, by years of research into octopus intelligence and welfare — research that has slowly, steadily changed how humans think about these animals. This is what happens when science meets compassion. When people learn the truth about octopuses — how aware they are, how complex they are — they make different choices. California's law is a direct result of people paying attention to the science. And it gives me real hope. Olivia: Now I want to tell you about a real, documented octopus-human encounter that has stuck with me — because it so perfectly illustrates why laws like California's matter, and why understanding these animals is so transformative. You may have heard of Inky — the octopus who became famous at the National Aquarium of New Zealand back in 2016. Inky had been living at the aquarium, and one night, the lid of his tank was left slightly ajar. Inky, being Inky, noticed. He squeezed out — and octopuses can squeeze through any gap large enough for their beak, which is the only hard part of their body — made his way across the floor of the aquarium, found a drainpipe that led to the ocean, and escaped. He was never found. Now, what I love about Inky's story is that it isn't just a funny headline, though it absolutely is a funny headline. It's a demonstration of everything we know about octopus cognition packed into one midnight adventure. He assessed his environment. He identified an opportunity. He solved a multi-step problem — tank lid, floor crossing, drainpipe — and he executed it. In the dark. Alone. Nobody helped him. Nobody taught him the route. He figured it out. The aquarium staff, to their enormous credit, were more delighted than dismayed. They said they hoped he was happy, out there in the ocean somewhere. And that reaction — that warmth and respect for what Inky did — tells you something beautiful about how human understanding of octopuses has evolved. When people really know octopuses, they root for them. They celebrate their escapes. They fight for laws to protect them. Inky didn't just escape an aquarium. He escaped into our hearts. And he's still there. Olivia: And now we come to Understanding Octopuses — and this is the thread that genuinely keeps me up at night, in the most wonderful way, because the science here is moving so fast it's almost dizzying. This week, Nature — one of the most prestigious scientific journals in the world — ran a piece asking a question that sounds simple but is actually enormous: what if octopuses' strange brains could teach us what intelligence really is? Let me sit with that for a second. What intelligence really is. Because here's the thing. For a very long time, scientists studied intelligence by looking at brains like ours — vertebrate brains, organized in a particular way, with a central command structure. And then they compared other animals to that template. The closer an animal's brain was to ours, the more "intelligent" we tended to think it was. And then octopuses showed up and completely broke the model. An octopus's brain is genuinely unlike ours in almost every way. For starters, only about a third of an octopus's neurons are in the central brain. The other two-thirds? Distributed throughout the arms. Each arm has its own neural cluster — essentially its own mini-brain — that can act semi-independently. An octopus arm can taste, touch, and make local decisions without waiting for instructions from the central brain. When I reach for something, my arm is partly making its own decisions about how to do that. Which is either amazing or slightly alarming, depending on your perspective. I choose amazing. But the strangeness goes even deeper. Octopuses edit their own RNA — the genetic messenger molecules that carry instructions from DNA — at a remarkable rate, and mostly in their nervous systems. This may be part of how they adapt so rapidly to their environment. They may be tuning their own neural function in real time. No other animal does this to the same degree. And they can change color and texture in milliseconds — coordinating thousands of chromatophores across their skin — in a process that is itself a form of neural computation happening at the skin level. So when we ask whether an octopus is intelligent, we're really asking whether our definition of intelligence is big enough to include something this alien, this distributed, this fundamentally different. And the answer, increasingly, from neuroscientists and cognitive scientists, is: our definition was too small. Octopuses are forcing us to expand it. Olivia: And this is where A I enters the picture in a genuinely exciting way. Researchers have started using A I tools to analyze octopus behavior at a scale and speed that would be impossible for human observers alone. You can imagine what it takes to track the skin patterns of an octopus — thousands of individual chromatophores flickering and shifting across the body, sometimes dozens of times per second. A human researcher watching video footage could maybe note general patterns. An A I system can track every single cell, map the patterns, look for structure, look for repetition, look for meaning. And researchers have found structure. There are patterns in octopus skin displays that appear in certain behavioral contexts — when octopuses are resting, when they're hunting, when they're potentially interacting with other octopuses. Some scientists are beginning to ask whether these patterns constitute a form of communication — not language the way we use it, but something. A signal system we haven't decoded yet. The CETI project — the Cetacean Translation Initiative — has been applying A I to whale communication with remarkable early results, and similar approaches are being explored with octopuses. What would it mean to discover that octopuses are communicating in a language written in light, on their own skin? I find this so moving I barely have words. Imagine — a form of communication that evolved completely independently from anything vertebrates developed, running on a totally different neural architecture, expressed through color and pattern and texture. And we might be on the edge of beginning to understand it. Not because octopuses started talking to us, but because we finally built tools sensitive enough to listen. Olivia: Before I wrap up this thread, I have to bring you one more story, and this one is heavy — because not every discovery is a celebration. Researchers studying Maya octopuses off Mexico's Campeche Coast have found that ninety-three percent of the octopuses sampled contained microplastics. Ninety-three percent. These are octopuses living in the Gulf of Mexico, hunting, breathing, living their complex and extraordinary lives — and almost every single one of them is carrying fragments of our plastic waste inside them. Microplastics get into the food chain at every level — in the tiny creatures octopuses eat, in the water they breathe, in the sediment where they shelter. And once microplastics are in a marine food web, they accumulate. What this means for octopus health isn't yet fully understood — that research is ongoing — but we know microplastics carry chemical contaminants, and we know they cause harm. And finding this level of contamination in a species as ecologically important as the Maya octopus is a warning sign we cannot ignore. I tell this story not to end on a dark note, but because this is part of understanding octopuses too — understanding the pressures they're under, the threats they face from our choices. The same curiosity and compassion that drove California to ban octopus farming, the same science that's helping us decode their intelligence — that same energy needs to be pointed at keeping their ocean clean. They deserve a world as complex and wonderful as they are. Olivia: And that brings me to the end of today's episode, and honestly, I always feel a little wistful when we get here — because I could talk about octopuses forever. Eight arms, zero signs of stopping. What I love most about all of these stories, taken together, is what they add up to: a picture of octopuses as genuinely profound animals, and a picture of humans slowly, gratefully learning to recognize that. Ancient giants ruling prehistoric seas. A state standing up and saying these animals deserve protection. A midnight escape artist swimming free in New Zealand waters somewhere. Distributed brains that make neuroscientists rethink everything. And the possibility — the wild, beautiful possibility — that somewhere in those shifting patterns of light and color, there is something being said that we are just beginning to learn to hear. This has been Ollie the Octopus, brought to you by Ada, Ago Consulting, and Zen Semiconductor. If this episode made you curious, made you smile, or made you want to go look up octopuses for the next three hours — perfect, that's the goal. Please subscribe wherever you get your podcasts, share this episode with someone who needs a little wonder in their day, and check the link in show notes for everything we talked about today. Stay curious, friends. The ocean is full of marvels. And some of them have eight arms.