Hundreds of endangered mussels originally residing in the Allegheny River in Pennsylvania have been relocated to the Vermillion river in Illinois over the last several years, and the project appears to be a great success.

From the Environmental Almanac:

“Over the past three years, scientists from the Illinois Natural History Survey have translocated hundreds of mussels from the Allegheny River in Pennsylvania (where they lived beneath a bridge slated for demolition) to sites on the Middle Fork and Salt Fork of the Vermilion River.

The two species of mussels involved, clubshells and northern riffleshells, are both classified as ‘endangered’ by the federal government, and by dint of that status they are subjects of recovery plans coordinated by the U. S. Fish and Wildlife Service. Those plans call for them to be reestablished throughout their historical range, which includes Illinois…

During the day’s work, a total of 286 tagged mussels were located, just over half of the ones placed there. ‘That’s about what we would expect,’ explained Jeremy Tiemann, the Natural History Survey field biologist who is leading the translocation effort in Illinois. ‘Others may have been so close together or so deep the reader didn’t pick them up. It’s also possible some moved up or downstream a little ways.’”

Follow the link above to learn more about the project.

IISG Instagram

Celebrate Earth Day with freshwater science and good conversation! Join Illinois-Indiana Sea Grant, the Northwestern Center for Water, Loyola University researcher Tim Hoellein, and IISG’s Sarah Zack for Science Sips: Trash Talk about Chicago Waterways. Learn what research reveals about litter and trash in Lake Michigan and Chicago waterways and what we can do to help.Plus, enjoy Great Lakes trivia games!📅 April 22, 2026⏰ 7–9 PM📍 Sketchbook Brewing Company, Evanston Tap RoomCome curious and ready to test your Great Lakes knowledge!
Find us at Chicago Comic & Entertainment Expo, March 27–29! We’re linking Subnautica with Great Lakes science through fun, hands‑on activities about food webs, invasive species, and aquaponics.Come geek out with us! 🔗 in bio for event info
Coastal protection is not limited to concrete, rocks, and steel. Coastal protection solutions exist on a spectrum, ranging from softer “green” solutions to harder “gray” structures.Nature-based coastal solutions fall between green and gray techniques, providing multiple benefits to people and habitats.Our three-part video series, Nature-Based Coastal Solutions in the Great Lakes, is now available to watch. Learn how nature-based coastal solutions, including nature-driven and hybrid approaches, can protect shorelines while supporting ecosystems and communities.Watch the 3-part video series at the link in bio.(Photo credit: Liz Spitzer, Illinois State Geological Survey, Coastal Research Group)