Ballooning is when spiders move through the air like a parachute by releasing "sail-like trails of silk that lift them up and off into the wind," per National Geographic.

The Great Smoky Mountains National Park is asking visitors to help them track down an invasive parachuting spider that was first spotted in Cades Cove last year.

Arachnophobes, look away — there's a giant invasive spider that has reportedly arrived in the the tri-state area. Earlier this year, experts warned that Joro spiders could start showing up in ...