Nature beat engineers again: A tiny desert lizard’s survival strategy is inspiring a breakthrough in water technology

Desert lizard inspires new technology: Life in the desert leaves little room for mistakes, especially when water is scarce. For the desert horned lizard (Phrynosoma platyrhinos), finding enough water to survive is a constant challenge.

Unlike many animals, this small reptile cannot simply lap up water or scoop it up like a bird. Instead, it relies on a natural system hidden in its skin, as per a report.

Scientists have now uncovered how the lizard moves water from its skin into its mouth, solving a long-standing mystery and inspiring a new water-harvesting technology in the process.

Scientists Finally Solved the Mystery of How the Lizard Drinks

The skin of the desert horned lizard contains microscopic channels between overlapping scales. These tiny channels pull moisture from damp soil or rare raindrops through capillary action, as per a Phys.org report.

While researchers already knew that the skin could collect water, they did not understand how the water eventually reached the lizard's mouth.

To find out, scientists recorded 12 lizards using high-speed cameras while carefully dripping water onto their backs.

The footage revealed a surprising behavior. The lizards slowly opened their jaws in an uneven motion and then closed them rapidly. As the jaws opened slowly, a continuous film of water traveling through the skin channels broke apart and moved into the corners of the mouth.

According to the researchers, these unusual jaw movements help the lizards pump water efficiently, as per the Phys.org report.

The Lizard's Drinking Method Wastes Very Little Water

To measure how efficient this process is, the research team created a mechanical replica using two glass plates connected by a hinge.

By testing different opening speeds, the scientists found that movements similar to those used by the lizards left only about 15% of the water behind as a coating. Roughly 85% of the water remained available for collection.

The researchers concluded that the lizard's characteristic slow jaw opening minimizes fluid loss and maximizes water intake, as per the Phys.org report.

The Discovery Inspired a New Water-Harvesting Device

Inspired by the reptile's drinking strategy, the scientists developed a water-harvesting system based on the same principle.

The prototype uses a sponge to pull water from wet soil. A motorized mechanism then mimics the lizard's jaw movements to collect the water.

The sponge was coated with Nafion, a material that removes metal ions and helps purify the collected water.

Early Tests Produced Promising Results

Researchers tested the system using glass beads soaked in contaminated water to simulate damp soil conditions, as per the Phys.org report.

The prototype successfully extracted usable water while removing approximately 95% of lead, arsenic, and other contaminants.

The team now hopes to scale up this nature-inspired technology into large automated harvesting systems that could one day help provide clean drinking water to drought-prone communities, as per the Phys.org report.

The findings were published in the journal Proceedings of the National Academy of Sciences.

FAQs

What animal inspired the new water technology?
The desert horned lizard inspired the new system.

How does the lizard collect water?
Its skin contains microscopic channels that pull in moisture through capillary action.