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World's biggest spiderweb discovered inside 'Sulfur Cave' with 111,000 arachnids living in pitch black
Live Science ^ | 4 November 2025 | Sascha Pare

Posted on 11/06/2025 9:10:09 AM PST by fidelis

A giant colonial spiderweb in a sulfuric cave on the border between Greece and Albania may be the largest ever found — and it was built by spiders we didn't know liked the company of others.

Researchers have discovered more than 111,000 spiders thriving in what appears to be the world's biggest spiderweb, deep inside a pitch-black cave on the Albanian-Greek border.

The "extraordinary" colony consists of a colossal web in a permanently dark zone of the cavern, according to a study published Oct. 17 in the journal Subterranean Biology. The web stretches 1,140 square feet (106 square meters) along the wall of a narrow, low-ceilinged passage near the entrance of the cave. It is a patchwork of thousands of individual, funnel-shaped webs, the researchers noted.

This is the first evidence of colonial behavior in two common spider species and likely represents the largest spiderweb in the world, said study lead author István Urák, an associate professor of biology at Sapientia Hungarian University of Transylvania in Romania.

The spider megacity is located in Sulfur Cave, a cavern that was hollowed out by sulfuric acid formed from the oxidation of hydrogen sulfide in groundwater. While the researchers revealed tantalizing new information about Sulfur Cave's spider colony, they weren't the first to see the giant web. Cavers with the Czech Speleological Society discovered it in 2022 during an expedition in the Vromoner Canyon. A team of scientists then visited the cave in 2024, plucking specimens from the web that Urák analyzed before going on his own expedition to Sulfur Cave.

(Excerpt) Read more at livescience.com ...


TOPICS: Science; Weird Stuff
KEYWORDS: albania; caves; greece; spiders; sulfurcave

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I've run into electrical rooms during fire inspections that were almost as bad. Those were mostly Black Widows, though.

1 posted on 11/06/2025 9:10:09 AM PST by fidelis
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To: fidelis

If I click on this I will have nightmares.


2 posted on 11/06/2025 9:11:53 AM PST by PUGACHEV
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To: fidelis

Nope! Nope Nope Nope!


3 posted on 11/06/2025 9:11:59 AM PST by Antihero101607
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To: fidelis

They must be surviving by eating their babies... How sick is that?


4 posted on 11/06/2025 9:12:40 AM PST by jerod (Nazis were essentially Socialist in Hugo Boss uniforms... Get over it!)
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To: fidelis

55,000 potential mates in pitch blackness. Kinda a reminds me of my days in bars long ago.


5 posted on 11/06/2025 9:12:49 AM PST by ProtectOurFreedom ( )
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To: fidelis

Nope. Not me. 😬


6 posted on 11/06/2025 9:13:08 AM PST by Redcitizen
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To: SunkenCiv

“A giant colonial spiderweb” ping.


7 posted on 11/06/2025 9:13:50 AM PST by Ezekiel (🆘️ "Come fly with US". 🔴 Ingenuity -- because the Son of David begins with MARS ♂️, aka every man)
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To: fidelis

Frodo, suspended in the web, is at a loss until he hears the voice of Gollum, who is watching, gloating, nearby.

Gollum: (In a sing-song voice) Naughty little fly, why does it cry? Caught in a web, soon you’ll be dead!

🎶I don’t like spiders or snakes


8 posted on 11/06/2025 9:14:35 AM PST by tumblindice (America's founding fathers: all armed conservatives)
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To: fidelis

Shelob’s children?


9 posted on 11/06/2025 9:14:51 AM PST by NorthMountain (... the right of the people to keep and bear arms shall not be infringed)
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To: fidelis

Who was the poor schlemiel whose job it was to COUNT them (over 110,000!)


10 posted on 11/06/2025 9:15:03 AM PST by left that other site ( For the Lord is our judge, the Lord is our lawgiver, the Lord is our king; He will save us Is.33:22)
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To: fidelis

Looks like some of the cobweb spiders around here if I don’t clean them out pretty regularly.


11 posted on 11/06/2025 9:15:58 AM PST by HartleyMBaldwin
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To: fidelis
111,000 spiders thriving in what appears to be the world's biggest spiderweb,

I have to imagine that the only way a colony of 110,000 spiders survives in such close proximity is to cannibalize each other.

12 posted on 11/06/2025 9:19:43 AM PST by Opinionated Blowhard (When the people find that they can vote themselves money, that will herald the end of the republic.)
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To: fidelis

13 posted on 11/06/2025 9:21:10 AM PST by Red Badger (Homeless veterans camp in the streets while illegals are put up in 5 Star hotels....................)
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To: fidelis
Note to self #1: Do not explore the Sulfur Cave.

Note to self #2: If you insist on exploring the Sulfur Cave, bring a flamethrower.


14 posted on 11/06/2025 9:21:18 AM PST by Leaning Right (It's morning in America. Again.)
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To: fidelis

Nuke it from orbit. It’s the only way to be sure.


15 posted on 11/06/2025 9:23:02 AM PST by KarlInOhio (I pray that the sleeping giant has finally awakened and been filled with a terrible resolve.)
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To: left that other site

> Who was the poor schlemiel whose job it was to COUNT them (over 110,000!) <

Comedian Nate Bargatze has a routine about that. He says that most scientific pronouncements go unchallenged. So scientists can make up any number they want.


16 posted on 11/06/2025 9:24:37 AM PST by Leaning Right (It's morning in America. Again.)
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To: Leaning Right

17 posted on 11/06/2025 9:25:22 AM PST by Sirius Lee ("Never argue with a fool, onlookers may not be able to tell the difference.”)
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To: fidelis

There were so many, but no one could find Charlotte...


18 posted on 11/06/2025 9:25:51 AM PST by Secret Agent Man (Gone Galt; not averse to Going Bronson.)
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To: Leaning Right

I Believe it.

I mean...Who’s gonna do a RECOUNT?

Not Me, I’ll tell you that. 🕷🕸🕷🕸🕷 Eyew!


19 posted on 11/06/2025 9:26:29 AM PST by left that other site ( For the Lord is our judge, the Lord is our lawgiver, the Lord is our king; He will save us Is.33:22)
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To: fidelis

What is their food source????


20 posted on 11/06/2025 9:27:54 AM PST by Mr. K (no i think 10%consequence of repealing obamacare is worse than obamacare itself.)
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