🇱🇾 Libya · Submerged site
Apollonia of Cyrenaica – Submerged Harbour at Marsa Susa
Archaic to Byzantine (631 BCE inland Cyrene; port 6th c. BCE – 7th c. CE Arab) · Dor Greek / Hellenistic / Roman / Byzantine
Cyrene port on the Libyan limestone coast — moles and shipsheds now 2–4 m under crystal water at Marsa Susa after AD 365 quake.