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Packed With Power—and Ready For Prey

Triangle weaver spiders (genus Hypiotes) have a unique skill in the animal kingdom. They construct webs that are loaded with tension, anchoring themselves with silk from their abdomen and pulling the web tighter with a central line. When a bug hits the web, the spider releases its anchor line, slinging the web forward to capture its prey. Researchers have discovered that the web stores an incredible amount of energy. When released, the web is like a net gun, capable of rocket-fast acceleration.

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