Egypt revealed a 2,000-year-old sunken city The city was located off Alexandria's coast Earthquakes and rising sea levels caused the submersion The city was drowned around 1,200 years ago Statues, buildings, and a dock were discovered underwater Marine archaeologists found pre-Roman statues and a merchant ship Stone anchors and a 125-meter dock were also found Alexandria is sinking about 3mm yearly The city faces potential inundation by 2050 This could displace 1.5 million people.