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CategoriesHarbour complexes
Basins, moles and warehouses built as a single piece of infrastructure.
🇪🇬 Egypt · Submerged site
331 BCE – Medieval (331 BCE – 1422 CE harbour active) · Ptolemaic/Hellenistic / Roman / Byzantine
Alexandria's Portus Magnus — twin harbour, Heptastadion mole and 3500 fallen Pharos blocks 4–12 m down in Eastern Harbour.
🇹🇳 Tunisia · Buried city
Phoenician to Arab (1101 BCE – 7th c. CE; Roman capital 146–46 BCE) · Phoenician / Carthaginian / Roman
1124 BCE Tyrian harbour older than Carthage — two cothons now 12 km inland under Medjerda alluvium, textbook delta progradation.
🇱🇾 Libya · Submerged site
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.
🇮🇹 Italy · Submerged site
Roman Imperial (42 CE – 6th century CE) · Roman
Rome's vast Claudian and Trajanic artificial harbours now inland through siltation, once Rome's maritime gateway.
🇩🇿 Algeria · Ancient city
Phoenician to Arab (12th c. BCE – 7th c. CE; Augustinian 354–430 peak) · Phoenician / Numidian / Roman
Augustine coastal capital — Numidian-Roman 60 ha city whose Seybouse estuary moles now 1–3 m offshore.
🇮🇱 Israel · Submerged site
Herodian to Crusader (22 BCE – 1265 CE) · Judean / Roman / Byzantine / Crusader
Herod's colossal Roman harbour Sebastos now submerged 5 m; one of earliest hydraulic-concrete harbours.
🇹🇳 Tunisia · Submerged site
Punic to Byzantine (8th c. BCE – 7th c. CE) · Phoenician / Carthaginian / Roman
Caesar battle harbour — kilometer-long curving mole now 1–4 m offshore on Bekalta promontory.
🇨🇾 Cyprus · Submerged site
Hellenistic to Early Byzantine (200 BCE – 650 CE) · Hellenistic Greek / Roman / Early Byzantine
Roman coastal roadstead on Cyprus — 120 m mole rubble and ballast piles 1–3 m off Pyla beach.
🇨🇾 Cyprus · Submerged site
Bronze Age to Late Roman (1180 BCE Enkomi-Salamis – 648 CE Arab sack) · Teucrid Greek / Cypriot / Persian / Hellenistic / Roman
Salamis Cypriot kingdom — 10 ha walled city whose 500 m mole at Pediaeus mouth now 1–2 m under Famagusta Bay.
EG · Submerged site
Ptolemaic to Late Roman (275 BCE – 6th c. CE) · Ptolemaic Greek / Roman Egyptian / Indian Ocean
Ptolemaic elephant port turned Indo-Roman pepper emporium — lagoon harbour behind coral reef now silted 1 m on Foul Bay.
EG · Submerged site
Ptolemaic precursor? Then Augustan to Roman (26 BCE – 3rd c. CE; Ayyubid reuse 11th–13th) · Roman Egyptian / Indo-Roman
Augustan Red Sea short-cut harbour — lagoon 800 m behind reef at Quseir, silted 1 m, abandoned 3rd c. for southern Berenike.
GR · Submerged site
Early Bronze to Mycenaean (3200–1100 BCE harbour) · Early Helladic / Minoanizing / Mycenaean
Early Bronze Saronic harbour — Kolonna fortified town whose mole now 2 m under Aegina Bay.
GR · Submerged site
Mycenaean to Late Roman (LH III – 5th c. CE harbour) · Mycenaean / Elean / Olympic
Olympia seaport — Homeric Pheia harbour basin and Pontikokastro islet now 4–6 m under Katakolo Bay.
GR · Submerged site
Mycenaean to Late Roman (LH – 3rd c. CE; Theban peak 5th–4th BCE) · Mycenaean / Boeotian / Theban
Boeotian shipyard port — twin 400 m moles at 3–4 m depth on Euboean Gulf, Theban naval base.
GR · Ancient city
Archaic to Byzantine (c.600 BCE – 14th c. CE harbour) · Corinthian / Classical / Hellenistic / Roman
Corinth Gulf western harbour — 600 m Canopus-style canal + Long Walls, now 2–3 m subsided northwest of Corinth.
GR · Ancient city
Archaic to Medieval (8th c. BCE – 12th c. CE port) · Corinthian / Roman / Byzantine
Corinth eastern harbour on Saronic Gulf — Tiberius mole and Isis glass warehouses now 3 m under Kechries bay, Diolkos terminus.
