Heracleion( the sunken city), also known by its Egyptian name Thonis-Heracleion.

Heraclion was built on the Egyptian city of "Thuns", which was an important port for Egypt on the Mediterranean Sea in the ancient about 600 BC.It is located in the Abu Qir Bay area, in a location inside the sea, about 5 and 6 kilometers from Abu Qir's shore, and is now under the water's surface at a depth of about 10 meters.