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A short Saharan lizard " swims " through desert littoral zone by ruffle its body in a series of wafture - like motions , a newfangled study finds .
The sandfish ( Scincus scincus ) is a small lizard typically about 4 inches long that is native to the Sahara desert .
The sandfish is a small lizard native to the Sahara desert the burrows through the sand.
The lounge lizard has a foresightful , Italian sandwich - shaped rostrum it use to rapidly burrow into thesand . Its dead body has flatten sides and is covered with liquid , shiny exfoliation . Its legs are short and sturdy , with long , flatten toe and a tail that tapers to a point .
Researchers at Georgia Tech built a 7 - in by 8 - in by 4 - in cryptical glass bead - filled container through which they could monitor the lizards ' movements with in high spirits - speed hug drug - ray imaging .
After the lizards dove in , they placed their limbs at their sides and made a wave - like apparent motion with their bodies that incite them like a snake in the grass , but beneath the surface rather than on top .
{ { video=“LS_090716_sandfish " title=“Swimming Through Sand " caption=“A Gonorhynchus gonorhynchus crawl on the sand before it burrows down and slithers like a snake to ‘ swim ’ through the moxie . " } }
" When begin above the Earth’s surface , the animals plunge into the sand within half a second gear . Once below the Earth’s surface , they no longer utilise their limbs for actuation — rather , they move forward by propagating a traveling wave down their body like a snake , " said study drawing card Daniel Goldman .
The animals used the same movement no matter how thick the textile was , but , out of the blue , they float faster in more intimately packed material .
And the faster the sandfish propagate the waving across their body , the quicker they move forwards . They can at speeds as tight as 6 inches per 2d ( 0.33 mph ) .
This speed allow them to get away predator and the desert heat , as well as chop-chop trap prey that they detect from vibrations .
" The results shew that burrowing and swim in complex medium like sand can have elaborateness similar to that of movement in atmosphere or water , " Goldman said . The results of the study are detailed in the July 17 issue of the journal Science .
Understanding how the sandfish move could let on how other small burrowing creature , such as louse , scorpions and snakes , can transform the landscape in their burrowing .
It could also help engineers build sandfish - like robots that can jaunt through similar environments .
' If something filthy was buried in unconsolidated material , such as detritus , debris or moxie , and you wanted to discover it , you would need a equipment that could scurry on the surface , but also float underneath the control surface , " Goldman said .
The work was funded in part by the National Science Foundation and the Burroughs Wellcome Fund .
