Visitors to JR Kasaoka Station in Kasaoka, Okayama Prefecture, are greeted by a large billboard standing in front that reads: “Welcome to Kasaoka, town of horseshoe crabs.” The city of Kasaoka ...

What is an Atlantic horseshoe crab? Atlantic horseshoe crabs may appear alien, but their history as earthlings is pretty impressive. They’ve been around for 450 million years, predating the ...