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.

Known for a head shaped like a hammerhead shark, the worm is typically light honey colored with a darker collar and one to five stripes on its body, according to the Texas Invasive Species Institute.

Known for its head shaped like a hammerhead shark, the worm is typically light, honey-colored with a darker collar and one to five stripes on its body, according to the Texas Invasive Species ...

It might be Shark Week, but sharks aren't the only hammerheads to watch out for this summer.An invasive worm that packs the poisonous power of a puffer fish and the slithering stamina of a snake ...

“Hammerhead worms, they can’t bite, they can’t sting, but it’s a toxin that’s present on their bodies.” The head resembles a hammerhead shark, and the worm also has a stripe down it.

A creepy-crawly invasive species known as the hammerhead worm is reappearing in Texas, following several weeks of excessive rainfall. The hammerhead worm, a ground-dwelling flatworm, is lethal to ...