Which of these nature-inspired product innovations was developed after studying the microscopic structure of lotus leaves and revolutionized self-cleaning surfaces?

Biomimicry is revolutionizing product design by drawing inspiration from nature's time-tested patterns and strategies. Companies are increasingly looking to the natural world to create sustainable, efficient, and innovative products. This poll tests your knowledge about a groundbreaking nature-inspired product that changed an entire industry by mimicking a fascinating natural adaptation.

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Velcro (inspired by burrs that stick to animal fur)
Lotusan paint and coating technology (inspired by the lotus leaf's water-repellent surface)
Shinkansen bullet train nose (inspired by the kingfisher bird's beak)
Sharkskin-inspired swimwear (modeled after shark denticles to reduce drag)