Spiders send up silk to take to the skies
Web-spinning species produce extremely fine film-like threads designed to catch wind like the sails of a dinghy. Spiderlings are most likely to perform this daring feat as a means to disperse themselves far away from their place of birth and their closely related family.
Before embarking on its aerial adventure, the spider will climb to a high elevation and test the air by lifting a leg. It will only take off if conditions are perfect. Up to four metres (13.1 feet) of silk are flung into the sky, and the spider keeps its legs outstretched throughout the journey.
It’s no secret that the weather can change suddenly, and ballooning spiders take an enormous risk. The arachnids have no control over their movements once they have taken flight, and they are completely at the mercy of the wind. Able to forgo food for 25 days, baby floating spiders have been discovered at elevations of five kilometres (3.1 miles) and even in the middle of the ocean.
Below The silk strandsspiders use to fly can be just 100 nanometres wide. A human hair is 80,000–100,000 nanometres wide