If you haven’t seen it yet, check out this captivating video of the basilisk, famously known as the “Jesus Christ Lizard,” effortlessly running on water.
The scene is mesmerizing, reminiscent of Looney Tunes, showcasing a lizard that appears to defy the laws of physics just like the Road Runner.
The common basilisk is native to Central and South America, thriving near rivers and streams in lush rainforests. These relatively small lizards boast tails that exceed their body length by more than two times.
Males typically reach about 75 cm (approximately 30 inches) in total length, featuring three distinct sail-like crests—one on the head, one on the back, and one on the tail.
Territorial by nature, males employ these impressive crests not only to assert dominance but also to attract smaller females.
One of their most remarkable traits is their ability to run on water, a skill intrinsic to their survival against predators. Hatchlings are born with this innate ability.
Over short bursts of up to 20 m (66 ft), adults can reach speeds of about 5 km/h (3 mph), while younger, lighter basilisks might surpass that speed.
Researchers have noted that they run on their hind legs, flapping their front legs reminiscent of Kermit the Frog.
Biologist Tonia Shea made a significant discovery. In 2003, while pursuing her Ph.D. at Harvard University, she utilized a high-speed camera to analyze 30 videos of basilisks running on water in a 4.6 m (15 ft) aquarium, comparing their movement speed with terrestrial lizards.
The common basilisk’s locomotion on water is quite unique.
When traversing water, they swing their legs outward and stretch them backward, keeping their feet relatively stiff and plunging them into the water with a piston-like motion.
A follow-up survey conducted the following year revealed that each step generates enough force to support the basilisk’s weight while propelling it forward.
The strongest force occurs during the initial half of each stride when the foot plunges straight down into the water, forcing water down and creating an air pocket around the temporarily submerged foot, significantly reducing drag.
This mechanism enables the basilisk to pull its feet out of the water with ease while maintaining forward momentum.
Basilisks are not only adept at hydrodynamics, but through evolution, they have developed both locomotor and physical adaptations.
Their hind legs are long and muscular, and their large hind feet feature scaly fringes along the sides of the third, fourth, and fifth toes.
When basking on land, these flaps fold against the toes; however, when on water, they expand, providing additional surface area for propulsion.
In summary, the basilisk, often referred to as the Jesus Christ Lizard, is a truly fascinating creature.
While a few other animals like pond skaters, fishing spiders, and certain grebes can walk and run on water, none do so with the same remarkable flair as the basilisk.
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