Hammerhead flatworms — an invasive pest that looks like a cross between a hammerhead shark and a leech — have been spotted in the Washington, D.C., area and across the United States.

GWINNETT COUNTY, Ga. — A growing number of metro area gardeners are crossing paths with something that looks like it belongs in a sci-fi movie. “It looked like an alien. It really had a ...

Here's what experts say you should do if you see them. Hammerhead flatworms — an invasive pest that looks like a cross between a hammerhead shark and a leech — have been spotted in the ...