Millions of baby spiders appeared to be raining from the sky in the Southern Tablelands earlier this month, with one astonished local fearing the region had been "invaded by spiders" and another reporting his home was "covered" in the creatures.
Goulburn resident Ian Watson said his house looked like it had been "abandoned and taken over by spiders".
"The whole place was covered in these little black spiderlings and when I looked up at the sun it was like this tunnel of webs going up for a couple of hundred metres into the sky."
The first, a dispersal technique called "ballooning", is more commonly used by baby spiders, although some adults use it as well. The spider climbs to the top of vegetation and releases a streamer of silk that catches on the breeze and carries the spider aloft.