More than just being the stuff of lake swimmers’ nightmares, the “leech-nado” video filmed by a Shedd Aquarium researcher gives Chicagoans one more reason to spurn Green Bay. What is a leech-nado?

Dr. Solomon David, a fish ecologist at the Shedd Aquarium in Chicago, is a huge movie buff, looking forward to "Avengers: Age of Ultron," "Star Wars" and all of the other big blockbusters coming out ...

The "Sharknado" and "Piranhacanda" are thankfully fictional terrors from B-rated science fiction flicks, but the "leech-nado" — well, that's completely, disgustingly real. And, not to freak anybody ...

It's unusual for leeches to swarm en masse, but as you can see in the video above, it's a terrifying possibility. This band of (possible) bloodsuckers was filmed near Green Bay, Wis., by Shedd ...

Shedd Aquarium postdoctoral research associate Solomon David captured video of what appears to be a massive school of leeches he unintentionally discovered while in the field in Green Bay, Wis. The ...

Seven new leech species have been discovered living in freshwater mussels around the world. The diverse ecological group were found inside more than 3,000 freshwater mussels collected from East Asia, ...