spider webs

Spider webs may look delicate, but they are carefully engineered structures made from one of nature’s remarkable materials: spider silk. From catching insects to sensing vibrations and even helping spiders travel, webs are much more than simple traps.

• Older Than Dinosaurs? – Spider webs have existed for at least 100 million years, with fossilized web evidence preserved in Early Cretaceous amber.
• Silk Has Many Jobs – Spiders can produce different kinds of silk for different purposes, including safety lines, sticky capture threads, prey wrapping, and web construction. Some spiders can produce up to eight different types during their lives.
• Not All Webs Are Round – The classic spiral web is only one design. Spiders also build tangle webs, funnel webs, tubular webs, and sheet webs, depending on the species and environment.
• Built Like An Architect – An orb web usually begins with structural radial threads, followed by a temporary non-sticky spiral. The spider then replaces it with a closely spaced sticky spiral to create the finished trap.
• A Spider Measuring Tape – When building a web, a spider can use its own body to judge distances. The spacing of the spiral threads is related to the distance between its legs and spinnerets.
• Twenty Times Larger – A typical web can be around 20 times the size of the spider that built it. Imagine building a house twenty times your own size—with silk!
• The Web Can Hear – A spider doesn't necessarily need to see its prey. Vibrations traveling through the web can tell it that something has landed or become trapped. Some spiders even use their webs as extended sensory systems.
• Why Spider Stays Unstuck – Some web threads are sticky while others aren't, allowing spiders to move across safe sections. Their legs also have dense hairs and non-stick surfaces that help prevent them from getting caught in their own traps.
• Stronger Than Steel – By weight, spider silk has greater tensile strength than steel and is also much more elastic. Scientists have therefore investigated it for applications such as artificial tendons and protective materials.
• Spiders In Space – In 1973, two spiders were taken aboard Skylab 3 to see whether they could build webs without normal gravity. They eventually did—but their webs were finer and showed noticeable differences from webs built on Earth.

Think you can spot the real facts from the spider myths? Take the quiz and put your web knowledge to the test!