... [Franck Goddio's] results were impressive ... But it was an expedition he undertook in 2000 that really put him on the map, so to speak: He managed to locate Thonis-Heracleion, an ancient port city (built circa 800 B.C.!) that's now completely submerged off the coast of Egypt. The hyphenated name hints at its cosmopolitan nature: The Egyptians called it Thonis, the Greeks, Heracleion after a massive temple to Heracles that once stood at the site ...