Bugün öğrendim ki: ağı kevlardan 10 kat daha güçlü olan Darwin'in kabuk örümceği adında bir örümcek var. şimdiye kadar incelenen en zor biyolojik materyaldir..

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Species of spider **Darwin's bark spider** (scientific name _**Caerostris darwini**_ ) is an [orb-weaver spider](/wiki/Orb-weaver_spider "Orb-weaver spider") that produces the largest known [ orb webs](/wiki/Orb_web "Orb web"), ranging from 900 to 28,000 square centimetres (140 to 4,340 sq in),[2][3] with bridge lines spanning up to 25 meters (82 ft). The spider was discovered in [Madagascar](/wiki/Madagascar "Madagascar") in the [Andasibe-Mantadia National Park](/wiki/Andasibe-Mantadia_National_Park "Andasibe-Mantadia National Park") in 2009.[4] Its silk is the [toughest](/wiki/Toughness "Toughness") [biological material](/wiki/Biomaterial "Biomaterial") ever studied, over ten times tougher than a similarly-sized piece of [Kevlar](/wiki/ Kevlar "Kevlar").[5] The species was named in honor of the naturalist [Charles Darwin](/wiki/Charles_Darwin "Charles Darwin"), with the description being prepared precisely 150 years after the publication of _[The Origin of Species](/wiki/The_Origin_of_Species "The Origin of Species")_ , on 24 November 2009.[2]