Atlantis may still be a myth, but ruins of other civilizations have been discovered in oceans around the world.
Cleopatra's Alexandria
The ancient ruins of Cleopatra VII's royal quarters lie in the murky waters of a harbor in Egypt's Alexandria.
Source: serageldin.com
Since 1992, marine archaeologists have been exploring Cleopatra's Alexandria.
Source: media.smithsonianmag.com / via: http://Stéphane%20Compoint
Yonaguni Monument
Discovered in 1987, the Yonaguni Monument is a massive underwater rock structure in Japan.
Source: 2.bp.blogspot.com
The debate still rages about whether the site is natural or man-made.
Source: giantstridedives.com
