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Biomimicry Projects: Nature Solves Engineering Problems Kids Can Copy
Velcro came from burs. The Shinkansen nose from a kingfisher beak. Kids can run their own biomimicry design challenges using plants, cardboard, and water — here's how.
In 1941, a Swiss engineer named George de Mestral returned from a hike and found burdock burs stuck to his jacket. Most people pull them off and move on. De Mestral looked at them under a microscope, saw the hook-and-loop mechanism, and spent eight years engineering Velcro.
That gap — between seeing something and understanding the engineering principle it embodies — is exactly what biomimicry projects develop in kids. It’s a way of looking at the natural world as a library of engineering solutions, accumulated over 3.8 billion years of evolution.
Key Takeaways
- Biomimicry — designing products and systems modeled on biological structures and processes — has produced Velcro, sharkskin swimsuits, the Shinkansen bullet train nose, and self-healing materials
- Three hands-on projects (hook-and-loop from plants, passive cooling from termite mounds, water collection from desert beetles) cost under $10 each and are accessible from ages 9+
- Running a biomimicry design challenge teaches kids to observe before building — a fundamental but underemphasized engineering habit
- The Biomimicry Institute’s AskNature.org database provides free access to 1,700+ nature-inspired design strategies organized by function
- Systems thinking — understanding how form, function, and environment interact — is the core cognitive skill these projects develop
Real Biomimicry That Changed Engineering
Before the projects, it helps to know the history. These aren’t thought experiments — they’re commercial products and engineering systems that made nature-observation pay.
Velcro: De Mestral’s hook-and-loop fastener replicated the mechanical mechanism of burdock burs attaching to fur — curved hooks on a stiff tip engage with loops of fiber. Current annual revenue: over $600 million.
Shinkansen nose: The original bullet train created a thunderclap every time it exited a tunnel, caused by the air pressure differential between the tunnel and open air. Chief engineer Eiji Nakatsu, who was also a birdwatcher, knew that kingfishers dive from air into water — with dramatically different air resistance properties — without a splash. He modeled the train nose on the kingfisher’s beak profile. The redesign eliminated the thunderclap, reduced energy consumption by 15%, and increased speed.
Sharkskin swimsuits: Shark scales (denticles) are shaped to reduce drag by creating micro-vortices at the surface that reduce friction. Speedo’s Fastskin suits replicated this geometry and were worn by 98% of swimming medalists at the 2000 Sydney Olympics before they were banned for competitive fairness.
Namibian fog beetle: The Namib desert beetle harvests water from coastal fog using its back — bumps of hydrophilic material surrounded by hydrophobic material cause water droplets to form and roll to the beetle’s mouth. Engineers at MIT and elsewhere have replicated this structure to design fog nets and condensation water collectors.
Project 1: Hook-and-Loop From Plants (Ages 9+)
Materials: Burdock plants or Velcro burrs (from dried plants in late summer/fall), magnifying glass, cardboard, different fabric samples (wool, cotton, fleece), ruler
Cost: Free (if you find actual burdock) to $5 (fabric samples)
Time: 1–2 hours
The process: First, find a burdock plant (they’re common in temperate regions and parking lot edges) and collect a few seed heads. Under a magnifying glass, look at the tips of the hooks — each one has a tiny curved tip that catches on loops.
Next, test which fabric surfaces the bur attaches to most strongly. Pull-test each combination with a fish scale or spring scale if you have one. Record results.
The engineering question: What is the minimum hook size that still catches fabric? At what angle does the hook stop catching? What’s the relationship between loop density and attachment strength? These are the questions a textile engineer would ask when designing a competing product.
Project 2: Passive Cooling From Termite Mounds (Ages 10+)
Materials: Two identical cardboard boxes, clay or air-dry modeling compound, a thermometer, sunlight or a lamp, craft knife
Cost: Under $5
Time: 2–3 hours build + 1 hour observation
Background: Termite mounds in hot climates maintain internal temperatures within 1°C despite external temperature swings of 20°C. They do this through a passive ventilation system — convection channels that carry warm air up and out while cooler air enters from vents near the base. Architect Mick Pearce used this principle to design the Eastgate Centre in Zimbabwe, which requires no conventional air conditioning despite being in a hot climate.
The project: Modify one cardboard box to have small vent holes near the base and larger openings near the top (simulating the mound’s chimney effect). Leave the second box sealed. Place a thermometer in each. Set both under a lamp. Record temperature over 30 minutes.
The modified box will run 2–5°C cooler. The principle is the same as the termite mound — the stack effect, where warm air rises and draws cooler air from below.
Project 3: Water Collector From Desert Beetles (Ages 11+)
Materials: Plastic sheet, sandpaper (fine and coarse), craft wax or candle wax, spray bottle, food coloring (for visibility), protractor
Cost: Under $8
Time: 2–3 hours
The project: Create a surface with alternating hydrophilic (water-attracting) and hydrophobic (water-repelling) zones. Sand the hydrophilic zones smooth and leave the hydrophobic zones rough, then apply a thin layer of wax to the smooth zones only. (This is counterintuitive — smooth, hydrophobic wax channels water away; rough hydrophilic zones attract it.)
Mist the surface with a spray bottle and observe where droplets form and in which direction they roll. Compare to an unmodified plastic sheet.
The engineering question: At what angle does the surface need to be tilted to make droplets roll consistently to a collection point?
| Biomimicry example | Nature model | Engineering product | Performance gain |
|---|---|---|---|
| Velcro | Burdock bur hook tips | Hook-and-loop fastener | Completely novel fastening category |
| Shinkansen nose | Kingfisher beak profile | Bullet train nose design | 15% energy reduction, eliminated tunnel boom |
| Sharkskin suits | Shark denticle geometry | Fastskin swimsuit | ~2–3% drag reduction |
| Fog beetle water collector | Namibian beetle’s back | Fog nets, condensation collectors | Water in regions with no rain |
| Bird bone structure | Hollow bones with internal struts | Aerospace honeycomb structures | High strength-to-weight ratio |
How to Run a Biomimicry Design Challenge
The AskNature.org database (from the Biomimicry Institute) organizes over 1,700 nature-inspired strategies by function — “how does nature stay warm?”, “how does nature attach things?”, “how does nature move water upward?” — making it an excellent research starting point.
The design challenge format:
- Define the problem: What engineering challenge are you solving? (Reduce drag, collect water without electricity, attach without glue)
- Search nature: What organisms solve analogous problems? Use AskNature.org or observation
- Abstract the principle: What is the underlying mechanism, divorced from the specific biology?
- Apply the principle: Build a prototype that uses the mechanism in a new context
- Test and measure: Does the prototype out-perform the non-biomimetic approach?
How to Teach Your Kid About Biomimicry
Ages 5–8: The Observation Walk
Before any building, go outside with a magnifying glass. Ask your kid to find something that sticks to other things, something that repels water, something that bends without breaking. Collect three examples of each category. This is the naturalist observation habit — the precursor to biomimicry thinking.
Ages 9–12: The Hook-and-Loop Project
Run Project 1 above. Before showing the bur under a magnifying glass, ask your kid to predict why it sticks. Then look together. The microscopic structure should be a genuine surprise. Follow up: “Could you make something that sticks the same way, but is made of paper?”
Ages 13+: The Design Challenge
Present a real engineering problem: “Water is scarce in this hypothetical desert environment. No electricity is available. Design a system that collects water from air.” Give access to AskNature.org and three hours. Require a written summary of the nature model, the abstracted principle, and the prototype design. This is exactly the process a biomimicry design firm uses, and it’s entirely accessible at this age.
The question to ask: “What problem does this organism actually need to solve, and what in its environment made this solution worth evolving?”
What to Watch For Over the Next 3 Months
Month 1: Watch for whether your kid starts pointing out nature solutions in everyday life. “That’s like how a duck’s feathers work” when they see a water-repellent jacket. This transfer of the biomimicry lens is the sign that the project created a new way of seeing, not just a fun afternoon.
Month 2: If interest persists, introduce the AskNature.org database directly. Have your kid pick a function (“How does nature filter?”) and read three examples. Ask what they all have in common. Pattern recognition across biological solutions is advanced systems thinking.
Month 3: A motivated kid can submit a biomimicry design challenge entry to the Biomimicry Institute’s annual Youth Design Challenge, which accepts entries from K–12 students internationally. See project-based learning research for why challenge-based formats produce more durable learning than open-ended projects.
Also consider pairing these projects with kitchen-table STEM research for the evidence on why hands-on projects with a defined question outperform passive observation.
Frequently Asked Questions
Do you need a biology background to do biomimicry projects?
No. The design process focuses on observing what nature does, not explaining why in biological terms. A kid who notices that lotus leaves repel water and asks “how?” is doing biomimicry observation, regardless of whether they can name the underlying cell biology.
How is biomimicry different from just copying nature?
Copying nature would be building an airplane that flaps its wings. Biomimicry abstracts the principle (lift generated by cambered surface moving through air) and applies it in an engineered context (fixed wing with controlled airflow). The abstraction step is what makes it engineering rather than imitation.
Is biomimicry used in real industries today?
Extensively. Aerospace, automotive, textiles, architecture, materials science, and consumer products all have active biomimicry programs. Nike, Boeing, Tesla, and BASF all have published biomimicry-inspired products. The Biomimicry Institute estimates the global market for biomimicry-inspired products at over $1.6 trillion.
What age is appropriate for biomimicry projects?
The observation component (age 5+) and simple model building (age 7+) are very accessible. The full design challenge — from problem to nature search to prototype to test — is appropriate from about age 9 with guidance, and age 12 independently.
About the author Ricky Flores is the founder of HiWave Makers and an electrical engineer with 15+ years of experience building consumer technology at Apple, Samsung, and Texas Instruments. He writes about how kids learn to build, think, and create in a tech-saturated world. Read more at hiwavemakers.com.
Sources
- Vincent, J.F.V., et al. (2006). “Biomimetics: Its Practice and Theory.” Journal of the Royal Society Interface, 3(9), 471–482. https://doi.org/10.1098/rsif.2006.0127
- Biomimicry Institute. (2024). AskNature Database. https://asknature.org/
- Barthlott, W., & Neinhuis, C. (1997). “Purity of the Sacred Lotus, or Escape from Contamination in Biological Surfaces.” Planta, 202, 1–8. https://doi.org/10.1007/s004250050096
- Parker, A.R., & Lawrence, C.R. (2001). “Water Capture by a Desert Beetle.” Nature, 414, 33–34. https://doi.org/10.1038/35102108
- Eder, M., Amini, S., & Fratzl, P. (2018). “Biological Composites — Complex Structures for Functional Diversity.” Science, 362(6414), 543–547. https://doi.org/10.1126/science.aat8297
- Benyus, J.M. (2002). Biomimicry: Innovation Inspired by Nature. Harper Perennial.
