We're being invaded by asian jumping worms in the northeast. They destroy the forest leaf mulch layer resulting in loss of both many plant and insect species that depend on it. While almost none of the worms you find in North America today are native, these guys are a real disaster.
https://www.invasivespeciescentre.ca...jumping-worms/
Looks like they're here, too: https://www.miamiherald.com/news/nat...278572054.html
According to the Miami Herald they're not as bad as they sound. Not good, but not all that bad.