Meet The ‘Jesus Christ Lizard’ That Runs On Water — A Herpetologist Explains

InnovationScienceMeet The ‘Jesus Christ Lizard’ That Runs On Water — A Herpetologist ExplainsByScott Travers,Contributor.Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world.Follow AuthorApr 25, 2026, 08:30am EDT--:-- / --:--This voice experience is generated by AI. Learn more.This voice experience is generated by AI. Learn more.What looks like a miracle is a razor-thin margin of survival. Meet the lizard that runs on water, and why it only works for so long.gettyIn the dense and humid lowland forests and rivers of Central and South America, a sudden disturbance is all it takes to trigger one of the most unbelievable sights in all of vertebrate biology. A lizard bolts from the riverbank, but not to enter the water; instead, it traverses across it. For a few fleeting seconds, it appears to defy a basic rule of the natural world: running on water.This is the common basilisk, often dubbed the “Jesus Christ lizard.” Although its nickname invites spectacle, what looks like a miracle is, in fact, a tightly constrained interaction between anatomy and fluid dynamics. It only works under very particular conditions, and only for just long enough.As with many traits that seem extraordinary, the story here is less about breaking the rules of physics and more about using them. Here’s how the basilisk does this precisely, efficiently and at the edge of what’s possible, according to herpetology research.How A Lizard Runs On WaterTo understand how the common basilisk (Basiliscus basiliscus) runs on water, you have to discard the idea of “walking” altogether. Water cannot support weight in the same way solid ground can. For this reason, the lizard relies on a rapid sequence of forceful interactions with the water’s surface. Each step must generate just the right amount of upward impulse to delay sinking.Early experimental research published in Nature in 1996 provided the first detailed insight int...