Off the coast of Yonaguni Island in Japan, a submerged structure has puzzled divers, researchers, and archaeologists since its discovery nearly four decades ago. The monument, hidden beneath the ...

Examples of natural formations resembling artificial structures can be found worldwide. The Bimini Road, an underwater rock formation in the Bahamas, and the Giant’s Causeway in Northern Ireland both ...

Unpack your scuba gear, would-be Atlanteans. Turns out one “lost underwater city” is actually just the work of microbes and methane. Earth farts, basically. Years ago, the Guardian recaps, snorkelers ...