A creature so small it can sit on the tip of a pencil is putting Olympic gymnasts to shame.
American researchers have captured high-speed footage of the globular springtail, a common backyard hexapod that launches itself into a blur of backward somersaults at up to 368 rotations per second. To the naked eye, the jump happens so fast the animal simply disappears.
“Nothing on Earth does a backflip faster than a globular springtail,” said Adrian Smith, a biologist at North Carolina State University who collected the animals from leaf litter in his own backyard. “They’re extraordinary, but also ordinary.”
The study, published in Integrative Organismal Biology with co-author Jacob Harrison of Georgia Tech, used cameras shooting 40,000 frames per second to freeze the action. The springtail does not jump with its legs.
Instead, it releases a spring-loaded, forked appendage called a furca tucked under its abdomen. The snap takes about 1.7 milliseconds, roughly 100 times faster than a human blink, and flings the 1-to-2-millimeter animal as high as 62 millimeters, more than 60 times its own body length.
Once airborne, it keeps spinning. Researchers recorded 14 to 29 complete backflips in a single leap that lasts just 161 milliseconds on average. Peak spin rate hit 368 rotations per second. The trajectory is almost always backward or slightly sideways, never forward, confirming the jump is an emergency escape rather than everyday travel.
Springtails lack wings, stingers or bites. Their only defense against spiders and mites is this vanishing act. After the flip they either tumble to a stop or deploy a sticky tube called a collophore that anchors them instantly so they can walk away.
newscientist.com
Smith compared the motion to “the closest you can get to a Sonic the Hedgehog jump in real life.” The animals are harmless to people and abundant in healthy soil, where they help break down decaying plant matter. A single square meter of leaf litter can hold thousands of them.
The footage has already circulated widely after similar clips appeared online showing the creature’s pinkish, rabbit-like appearance and its instant launch. Scientists say the discovery underscores how much spectacular biology still hides in ordinary American backyards, if you have cameras fast enough to see it.
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