Horseshoe crabs, the blue-blooded burrowers in the genus Xiphosura, first appeared in the fossil record about 450 million years ago. Around that same time, arachnids crawled into existence.

Fervent Prayer (USA) 33-10 (8-8) Led inside,mild drive, won at Horseshoe Indianapolis 1m mdn gd in Jun beating Amigomeister (8-8) by 2 1/4l, 7 ran. X ...

Every spring horseshoe crabs come to South Carolina beaches to reproduce. A volunteer initiative with the SCDNR helps researchers better understand the species.

Horseshoe crabs may be spared in the near future, however. On Friday, the U.S. Pharmacopeia, an organization that sets standards for the biomedical industry, issued guidance on using synthetic ...

When and where to see horseshoe crabs. Horseshoe crabs gather on Delaware Bay beaches to spawn from May through early June, with the most seen during new and full moon high tides.