Imagine diving into a crystal-clear ocean and suddenly coming face-to-face with a bustling metropolis built not by humans, ...

While it is highly unlikely that cities will go underwater in the near future, according to a NOAA oceanographer specialist, any rise that is two feet or more above the average high tide has the ...

Pavlopetri is one of the oldest submerged cities known, dating back to around 5,000 years ago. It is an ancient Greek city that now lies underwater off the coast of southern Laconia in Greece.