Kamal Abu el-Saadat continued research in the 1960s with a pioneering submarine archaeology campaign which found more ruins and a 25-ton statue fragment. Another campaign began in the 1990s under the supervision of Franck Goddio, finding numerous artifacts including twelve sphinxes, some apparently removed from Heliopolis by the Ptolemies.
Kamal Abu el-Saadat researched submarines in the 1960s with a pioneering archaeological campaign that revealed more ruins and a large statue fragment. In the 1990s, Franck Goddio expanded this work by discovering numerous artifacts, including twelve sphinxes, which were possibly removed from Heliopolis during Ptolemaic rule.