Which famous natural world product was designed after its inventor observed seeds with tiny hooks that clung to his dog's fur during a hunting trip in 1941?

Biomimicry—the practice of looking to nature for design inspiration—has revolutionized countless products. From the invention of Velcro (inspired by burrs) to bullet train designs based on kingfisher beaks, nature's 3.8 billion years of R&D offers solutions to human challenges. Test your knowledge about these fascinating nature-inspired innovations that have transformed product design in the natural world industry.

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Velcro
Gore-Tex
Speedo Fastskin swimsuit
Lotus-effect self-cleaning paint