what makes something feel natural? the science of visual ecology in design
Long before we had language for it, our nervous systems already knew the difference between a forest and a parking lot.
Tell me, why does a hand-thrown ceramic mug feel warmer in your hand than a perfectly symmetrical one from Walmart? Why does a photo of an old-growth forest calm us in a way that a photo of a parking lot never will? And why do some brand designs, even ones built around conservation and nature, still manage to feel sterile, corporate, and strangely un-natural?
Surprisingly, I found out recently that the answer has less to do with subject matter and more to do with structure. So, I went on a deep dive so that I could share some of what I learnt here. Our brains are pattern-recognition machines that spent hundreds of thousands of years learning to read landscapes, and that inheritance didn't disappear just because we started looking at screens instead of savannahs. We are, whether we like it or not, still wired for the ecosystems we evolved in. And that wiring shapes what we find beautiful, trustworthy, calming, and real, long before we can explain why we feel that way.
^how I feel looking at nature
This is known as the
Science of Visual Ecology
the study of how the visual patterns of the natural world shape human perception, and what happens when designers borrow from that pattern language on purpose.
Now, I am by no means an expert in visual ecology, I just found this topic incredibly interesting, and realized that I definitely use some of its theories and concepts in my work. Let’s explore below shall we…
Nature Through Pattern
Unbeknownst to me, ecosystems are not random, even though they may look it. They are not perfectly ordered either. They live in a kind of in-between zone that our brains seem to find endlessly satisfying... at least mine does anyway.
Look closely at a fern, a river delta, a coastline, or the branching of your own lungs, and you'll notice the same structural trick repeating at every scale, also known as fractals (what a cool word, I love how it feels like it encapsulates so much more than I can describe visually and emotionally). A small piece of a fern frond looks like the whole frond. A tributary can resemble the river it feeds into. This property, called self-similarity, shows up again and again in biological systems, apparently because it's often the most efficient way to grow, distribute resources, or capture light and nutrients (who knew?! Nature is so smart).
Researchers studying fractals have found something pretty freaking cool: humans consistently prefer fractals with a mid-range complexity, generally somewhere between a fractal dimension of about 1.3 and 1.5 [1]. Too simple, and a pattern reads as artificial or boring (hello perfectly organized, equi-distant logos). Too complex, and it becomes visually overwhelming, almost noisy (you know the ones, the logos that feel like there are 100 things to look at in 1-inch of space). Nature, it turns out, tends to build itself right in that sweet spot. Coastlines, cloud formations, and tree canopies commonly measure in that same range, which may be exactly why they feel effortlessly pleasant to look at rather than either sterile or chaotic. Interestingly, the same preference shows up even in human-made marks. Researchers measuring the fractal dimension of Jackson Pollock's drip paintings found it fell into a similar range, and that viewers respond to them the same way they respond to natural scenery [2].
Then there's irregularity. Perfect symmetry is rare in living systems. A real leaf is never a mirror image of itself. A rock face is never a clean grid. Living things grow in response to gravity, wind, light, competition, and damage, and that responsiveness leaves visible traces of asymmetry, variation, and imperfection. Our brains read those traces as signals of authenticity. Something too perfect, too uniform, too repetitive, starts to feel manufactured, even artificial, even when we can't articulate exactly why. This concept is so cool to me because it extends far beyond ecology and applies to our everyday lives as well - how we decorate our homes, human faces, how we connect with different environments etc.
Why our brains are built to respond this way
But surprisingly, this isn't just an aesthetic preference we picked up somewhere along the way. I only learned this recently, but there's a genuine evolutionary logic underneath it and it ties into psychology. I love psychology but I’ve never really studied it beyond my own personal growth, so learning this was really really cool (at least in my opinion!).
Psychologists studying what's known as processing fluency have found that we tend to find things beautiful when our brains can process them easily, without expending too much cognitive effort, but not so easily that there's nothing to explore [3]. Natural fractal patterns hit that balance almost perfectly. They are familiar enough in structure to feel intuitive, but varied enough in detail to keep our attention gently engaged. Boom! And we’ve arrived at the deep visual ease and satisfaction from the aerial views of a tributary, fern fronds, or the tree canopy of branching leaves.
There's also a well-documented physiological response. EEG studies have found that viewing fractal patterns in the 1.3–1.5 dimension range produces the strongest alpha-wave activity in the brain, the signature of a relaxed, wakeful state [4], and that this calming response is strongest for the specific, irregular forms of fractal geometry found in nature, as opposed to fractals that repeat in an exact, mathematically perfect way [5]. Our nervous systems seem to relax in the presence of those patterns, almost like a kind of visual exhale.
This is closely tied to the biophilia hypothesis (also something I recently learned about!), first proposed by biologist E.O. Wilson, which suggests that humans have an innate, evolutionarily rooted affinity for the natural world and living systems [6]. We didn't evolve in office buildings or on grid-based interfaces. We evolved scanning canopies for movement, reading water for depth and safety, noticing the subtle irregularities that separated a stable path from an unstable one. Biophilia argues that this affinity didn't just disappear with urbanization, it's still running in the background of our brains every time we respond to a space, an image, or a design [7].
Colour plays its own part in this story. Natural palettes are rarely made up of pure, saturated, single-tone colours. A forest isn't one green, it's dozens of related greens, shifting with light, shadow, moisture, and species, threaded through with warm browns, muted golds, and the occasional unexpected accent from a flower or a bird. Ecosystem palettes tend to be harmonically related and desaturated relative to their surroundings, which is part of why they feel cohesive rather than jarring, even when they contain enormous variety. When designers reach for a single flat, oversaturated "nature green," they often lose exactly the quality that made the reference feel natural in the first place - the relationship between the colours, not just the colours themselves.
What this means for designers, especially in environmental messaging
If you're doing science communication or conservation-focused design, this isn't just an interesting evolutionary tangent, it's a genuinely practical toolkit. Here's where I think it matters in your design process:
Let go of perfect symmetry. A grid is useful for organizing information, but a too-perfect grid can work against the emotional resonance you're trying to build, especially for content about living systems. Subtle asymmetry, organic alignment, and variation in scale can make a layout feel more alive without making it feel less professional.
Borrow structure, not just imagery. It's tempting to just drop in a photo of a leaf or a wave and call it a day. But the deeper opportunity is borrowing the underlying pattern logic of nature. It's the branching structures for information hierarchies, radial growth patterns for data that expands outward from a central idea, layered translucency the way light filters through a canopy. That's where design starts to feel intuitively "right" rather than just decorated. For inspiration you can check out Valentina D'Efilippo's work! I aspire to create like her one day.
Build palettes the way ecosystems build them. Instead of picking a single "brand green," build a small family of related, desaturated tones the way a forest floor does, and let one unexpected accent colour do the emotional work a single bright bird or wildflower would do in a real landscape.
Use complexity intentionally. Remember that sweet spot, too simple reads as generic, too complex reads as overwhelming. If your messaging is trying to communicate something urgent or emotionally weighty, like habitat loss or climate data, aim for that mid-range complexity that keeps a viewer's brain gently engaged rather than either checked out or in overload.
Let the message breathe like a landscape does. Real ecosystems have negative space: sky, water, empty ground. Give your design that same breathing room instead of filling every inch. Density without pause is one of the fastest ways to make something feel artificial, no matter how "natural" the colour palette is.
When we design environmental messaging that mimics the actual visual logic of the ecosystems we're trying to protect, we're not just making something prettier. We're speaking to people in a visual language their nervous system already understands, one that predates language itself.
References
Spehar, B., Clifford, C. W. G., Newell, B. R., & Taylor, R. P. (2003). Universal aesthetic of fractals. Computers & Graphics, 27(5), 813–820. https://doi.org/10.1016/S0097-8493(03)00154-7
Taylor, R. P., Spehar, B., Van Donkelaar, P., & Hagerhall, C. M. (2011). Perceptual and physiological responses to Jackson Pollock's fractals. Frontiers in Human Neuroscience, 5, 60. https://doi.org/10.3389/fnhum.2011.00060
Reber, R., Schwarz, N., & Winkielman, P. (2004). Processing fluency and aesthetic pleasure: Is beauty in the perceiver's processing experience? Personality and Social Psychology Review, 8(4), 364–382. https://doi.org/10.1207/s15327957pspr0804_3
Hagerhall, C. M., Laike, T., Taylor, R. P., Küller, M., Küller, R., & Martin, T. P. (2008). Investigations of human EEG response to viewing fractal patterns. Perception, 37(10), 1488–1494. https://doi.org/10.1068/p5918
Hagerhall, C. M., Laike, T., Küller, M., Marcheschi, E., Boydston, C., & Taylor, R. P. (2015). Human physiological benefits of viewing nature: EEG responses to exact and statistical fractal patterns. Nonlinear Dynamics, Psychology, and Life Sciences, 19(1), 1–12.
Wilson, E. O. (1984). Biophilia. Harvard University Press.
Kellert, S. R., & Wilson, E. O. (Eds.). (1993). The Biophilia Hypothesis. Island Press.
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