And now divers have discovered five of their approximately 2,000-year-old shipwrecks and a giant, granite anchor pole near the tiny Greek island of Levitha.
The amphorae came from the cities of Knidos, Kos, Rhodes, Phoenicia and Carthage, according to the Hellenic Ministry of Culture and Sports .
Dating to just before the middle of the third century B.C., the goods were made during a time when the Ptolemaic and Hellenistic Antigonid dynasties ruled maritime trade in the Aegean, the ministry reported.
(400 kilograms) granite anchor pole, spotted nearly 150 feet (45 meters) underwater, that dates to the sixth century B.C.
One wreck had amphorae from the ancient Greek city of Knidos, located in what is now Turkey, that also dated to the third century B.C. Three other shipwrecks found nearby were carrying cargo that included .
The last three newly discovered shipwrecks consisted of a first-century-B.C. vessel toting amphorae from the northern Aegean, a first-century-A.D. wreck with amphorae from Rhodes and a shipwreck with amphorae that dated to the early Christian period.
Researchers found the shipwrecks during an underwater excavation lasting from June 15 to 29, under the direction of archaeologist George Koutsouflakis, director of the Department of Underwater Archaeological Sites, Monuments and Research with the Ephorate of Underwater Antiquities, which is part of the Hellenic Ministry of Culture and Sports.