Helen Smith takes a look at how and why spiders take to the skies
Did you know spiders – particularly our smallest species and the spiderlings of many larger species – can take flight by so-called ‘ballooning’?
How do spiders fly?
Take a look at this video to discover how and why spiders fly
How far do spiders fly?
Most spiders travel relatively short distances, yet some become pioneers. Their rapid colonisation of isolated volcanic islands and Charles Darwin’s famous observation of thousands of tiny spiders landing on the rigging of The Beagle 100km off the South American coast attest to their long-distance capabilities.
Altitudes, too, are impressive, with individuals recorded in the aerial plankton several thousand metres above the Earth.
Ballooning is an energetically cheap form of transport but, whatever the distance travelled, just going with the wind comes at a cost.
Only a few aeronauts will survive their risky journeys – a price worth paying only when the chances of colonising pastures new outweigh the risks of overcrowding at home.
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