Early on July 21, 365 CE, an 8.5 magnitude earthquake shook the eastern Mediterranean, triggering a powerful tsunami. The Egyptian city of Alexandria was damaged, towns crumbled on the island of Crete, and the Roman port city of Neapolis, located on the coast of North Africa, was largely swallowed by the wave, according to historical records. Now, after being hidden under water for more than 16 centuries, the remains of Neapolis have been discovered by archaeologists off the coast of northeast Tunisia. This, according to the AFP, confirms accounts that the city was a casualty of the ancient natural disaster. Following several years of exploration, researchers from the Tunisian National Heritage Institute and the University of Sassari in Italy have discovered nearly 50 acres of watery ruins…