Which of these major product innovations was directly inspired by the structure of burrs that stick to animal fur, leading to a revolutionary fastening system?

In the world of sustainable product design, biomimicry (learning from and mimicking nature's designs) has led to revolutionary innovations. Companies are increasingly turning to the natural world for inspiration to solve complex design challenges. This poll tests your knowledge about one of the most successful commercial applications of biomimicry that transformed an entire industry with its nature-inspired design.

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Velcro (invented by George de Mestral after noticing burrs stuck to his dog's fur)
Gore-Tex (inspired by tree leaf pore structures)
Speedo Fastskin swimsuits (modeled after sharkskin denticles)
Lotusan self-cleaning paint (derived from the lotus leaf's water-repellent surface)