A researcher inspects the interior of a male American horseshoe crab at NASA's Kennedy Space Center in Florida. Known ...

The horseshoe crab has been on Earth for 350 million years. An ancient and complex anatomy hides within its domed shell. From its 10 eyes to its tube-like heart, the horseshoe crab's unique ...

A lawsuit filed earlier this year against pharmaceutical giant Charles River Laboratories alleges that the company is contributing to a significant decline in horseshoe crabs (listed as “vulnerable” ...

VIRGINIA BEACH, Va.— The Center for Biological Diversity and 22 partner organizations petitioned NOAA Fisheries today to list the American horseshoe crab as an endangered species under the Endangered ...