This real mushroom looks exactly like a cartoon character and the internet is losing it

One of the things I love about the internet is that every few months, something real shows up and looks so fake that everyone collectively loses their mind for 48 hours.

This week’s culprit is a mushroom. Specifically, a mushroom that looks like it was designed by the same person who drew Ursula from The Little Mermaid and then decided, actually, let’s make it a snack-sized version and hide it in someone’s backyard.

I saw it and genuinely thought someone had planted a plastic toy in the dirt for a photo. They did not.

What even is this thing?

The Clathrus archeri — nicknamed the octopus stinkhorn — is a real, living, completely unedited species of fungus. It starts as a small white egg half-buried in the ground, which is already unsettling, and then it cracks open and sends out four to eight bright red tentacles that curl outward like arms. The underside of those tentacles is coated in a dark, slick, foul-smelling spore mass called a gleba. So it looks like a cartoon villain and smells like a crime scene. Nature really said: go big or go home.

It’s native to Australia and New Zealand but has been spreading through Europe and North America for decades — probably via soil and plant imports. Which means it could, theoretically, be lurking in a garden near you right now.

Why does it look so fake?

The color is the thing that gets people. That red is not subtle. It’s not the dusty brownish-red of a normal woodland mushroom — it’s crayon red. Cartoon red. The kind of red that would get flagged as oversaturated if you posted an unedited photo of it.

The reason for that color is actually pretty sinister logic. The stinkhorn uses the color AND the smell together to attract flies and other insects. The flies land on the gleba, get the spores stuck to them, and then fly off to spread them somewhere else. The mushroom is essentially running a con — it mimics rotting meat with both its appearance and its odor to lure in bugs that would normally be decomposing something.

So it’s a liar. A beautiful, horrifying, bright red liar.

Is it dangerous?

Clinically? Not particularly. The Clathrus archeri is not considered fatally toxic to humans, though you should absolutely not eat it — the smell alone would probably stop you before you got that far. It’s not going to hurt your pets if they sniff it, though again, the odor reportedly clears the area pretty fast on its own.

The Royal Botanic Gardens at Kew have documented it showing up in Britain since the early 1900s, spreading steadily since. They’re not sounding alarms. They’re mostly just fascinated, which feels like the appropriate response.

Why is the internet freaking out about it right now?

Someone posted a close-up photo — bright red tentacles fully extended, emerging from leaf litter, looking like a prop from a 1990s kids’ Halloween special — and it went everywhere. The comments are full of people tagging friends with “is this real” and others insisting it’s AI-generated.

It is not AI-generated. That’s the whole point.

There’s something specific that happens when nature produces something that looks MORE artificial than actual artificial things. Your brain short-circuits a little. You know logically that fungi are weird and ancient and do whatever they want, and yet — that red. Those tentacles. That egg sac. It feels like a violation of an unspoken agreement between reality and aesthetics.

Has nature done this before?

Oh, constantly. The blue Entoloma hochstetteri looks like it was designed to match a tech startup’s brand guidelines. The Hydnellum pezizii — also called the bleeding tooth fungus — looks like it’s actively bleeding white foam with red centers, like something out of a horror movie prop department. The Mycological Society of America has been quietly documenting fungi that make people do a double-take for years.

Mushrooms in particular seem to specialize in this. They don’t follow the visual rules we’ve assigned to “nature.” They show up in colors that feel wrong, shapes that feel designed, and configurations that feel intentional in a way that makes you wonder who approved the concept art.

Nobody approved it. That’s the thing. This is just what happens when something has been evolving for 400 million years without any input from humans.

So should I be looking for this in my yard?

Honestly? Yes. The Clathrus archeri has been spotted in the UK, France, Germany, and across parts of the US — it tends to pop up in wood chip mulch, garden beds, and compost-rich soil, especially after wet weather in late summer and fall.

If you find one, do not be alarmed. Take approximately forty photos. Post them somewhere. Watch people tell you it’s fake. Know in your heart that you have witnessed something legitimately absurd and completely real, and that nature is funnier and stranger than we give it credit for.

And if you want to go down a rabbit hole on this, I did a whole spiral on weird things that don’t look real but are a while back. The octopus stinkhorn fits right in.

The thing about this mushroom isn’t that it’s dangerous or rare or scientifically groundbreaking. It’s that it exists at all — that reality produced something this visually unhinged and then just left it in people’s garden beds like a prank.

Nature has been doing this for longer than we’ve been around to be confused by it. We just now have phones good enough to photograph it and internet fast enough to make everyone else confused about it too.

That red, though. I don’t know. I still don’t fully believe it.

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