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🇮🇱 Israel · Submerged site
Persian to Crusader (c. 530 BCE – 1265 CE) · Phoenician / Persian / Hellenistic / Roman / Crusader
Clifftop Crusader port whose Roman quay and kurkar mole now lie 1–3 m down along Apollonia cliffs.
🇱🇾 Libya · Ancient city
Archaic Greek to Byzantine (630 BCE–7th c CE) · Greek / Hellenistic / Roman / Byzantine
Cyrene's port with double submerged harbour at -2.5 m, theatre and Governor's mosaics.
🇧🇬 Bulgaria · Submerged site
Archaic to Late Antiquity (610 BCE – 6th c. CE) · Milesian Greek / Thracian / Roman / Byzantine
610 BCE Milesian colony whose harbours are now –6 m and linked to the vanished island Kianida of Ptolemy's map.
