1. There are 650 known species of leeches. 2. The largest leech discovered measured 18 inches. 3. About one-fifth of leech species live in the sea, where they feed on fish. 4. The leech has 32 brains ...

Learn about a 480-million-year-old leech fossil that revealed that ancient leeches didn’t have the biological components necessary to suck blood. It’s the beginning of the spooky season, which means ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. It’s not exactly the kind of therapy you’d expect to get at the ...

Northumbria University, Newcastle provides funding as a member of The Conversation UK. As we tidy away the Dracula capes and glow-in-the-dark plastic fangs for another winter, one notorious blood ...

Receive emails about upcoming NOVA programs and related content, as well as featured reporting about current events through a science lens. Mark Siddall: Dear Inge, Yes. Stay very very still. They are ...

Andrew Plucinski’s leeches are picky about skin. When offered the chance to bite a person who bathes in smelly soap they recoil, even when they’re hungry. Leeches prefer their humans unseasoned. In ...

A chance video by a grad student relishing her first big field trip might help resolve an argument that’s raged among biologists for more than a century. The question: Can leeches jump? Yes, at least ...

Most people find leeches repulsive. But an up-close look reveals they are fascinating – and surprisingly beautiful – little creatures. Here are five surprising facts about leeches and the people who ...

On July 29, 2008, Mark Siddall answered selected viewer questions about leeches large and small, the best way to remove one from your skin, whether he'd undergo leech therapy himself, and more. Please ...

WALKER, Minn. — Minnesota's third-largest lake has a namesake only an angler could love: the leech. Earthworm's ugly aquatic cousin. Those slimy, crawly creatures straight out of a horror film. But ...