June 5, 2024 – June is a peak month for the horseshoe crab’s migration along the East Coast, following the high tides of each new and full moon. The annual movement of these “living fossils” dates back about 350 million years, so it’s believed to be the world’s oldest and largest wildlife migration.
But in a new lawsuit, an endangered species watchdog group says these crabs are in big trouble and the Maryland Department of Natural Resources (DNR) isn’t being transparent about how many are killed each year.
The horseshoe crab is a “valuable commodity to humans,” according to DNR, because its copper-based blood is used for biomedical research. Their blood is used to detect toxins in drugs and medical devices. In 2021, Chesapeake Bay Magazine reported on their key role in developing COVID-19 vaccines, among others.
As DNR explains, the animals are fished for medical use by specially permitted fishing operations. Their blood is drawn in a biomedical facility and they are released back into the water. But environmental groups raise questions about how many of those released horseshoe crabs can survive and thrive.