Once again, hammerhead flatworms are wriggling into the spotlight — this time in Canada.
The toxic and invasive pests, which originate from Southeast Asia, have the ability to regenerate even if chopped into pieces. They have long been spotted across the United States and in other countries, including Canada. On iNaturalist, an invasive species reporting platform, there is evidence of Canadians mentioning the worms since at least 2019, with the most recent report logged as of Tuesday.