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 ...

He focused on the horseshoe crab’s golden, protective carapace and the trio of juvenile golden trevallies poised to dart down for edible morsels ploughed up in its wake. The horseshoe crab’s carapace ...