In the novel Spidersilk, spiders utilize their spidersilk to help protect the main character. Spidersilk isn't a fictional element though. In fact, presently Spidersilk is being used to create a strong fiber that will soon be implanted into the human body. This amazing substance works like a muscle but is a whole lot stronger. Keep your eye out because you might be hearing a lot more about this substance in the future. To learn more check out this site: http://news.discovery.com/tech/nanotechnology/stretchy-spider-silk-wires-flex-muscles-130910.htm