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2 places to sift through. Narrow by kind, country, period or how firmly each one is established — contested and pseudoarchaeological claims are labelled here, never hidden.
🇬🇷 Greece · Submerged site
Classical to Hellenistic (5th–3rd BCE harbour) · Classical Greek / Halieian
Verified – Halieis Porto Cheli Classical harbour 5 m down, Tiryns Mycenaean port successor. American School Halieis 1965 Jameson excavated submerged town walls, mole 150 m at 4–6 m due to Argolic…
🇬🇷 Greece · Submerged site
Roman to Byzantine (1st BCE – 6th CE) · Roman / Greek
Verified – Roman maritime villa complex 1–2 m under Palaia Epidavros bay (Epidaurus sanctuary port). Villa maritima with mosaics, baths, fish tanks, moles 100 m at 1–2 m due to +1 m Roman rise.