Sunken citiesBeneath the waters of Abukir Bay, at the edge of the northwestern Nile Delta, lie the submerged remains of once lost ancient Egyptian cities that sank over 1,200 years ago, but were dramatically rediscovered in the last years of the 20th century. Pioneering underwater excavations, begun in 1999 and still underway, are uncovering an array of ancient buildings and artefacts. Temple ruins and monumental statuary, harbour installations (and no fewer than