A story I never imagined reading. A bridge over the Mississippi River on I-74 near Rock Island is being relocated and this involves a massive relocation of mussels which are now in the footprint of the new bridge area. "Three federally endangered species, and a couple of state-listed species and populations of many common species have been noted by surveys of the target area. About a million mussels are believed to be there, and the goal is to relocate about 500,000 mussels in coming weeks."
How are they going to accomplish this you may be asking? "Divers are going down, searching for mussels in the murky waters of the Mississippi and bringing them to shore so individuals of the endangered species can be identified and marked. Then they, and the other mussels, will be moved to new nearby locations where it is hoped they will thrive. The overall cost of the bridge project is estimated at $1.2 billion. The relocation is expected to cost $2.4 million, according to the Iowa Department of Transportation."
Here is an IDOT video explaining the process which has just begun. It's quite mind boggling.