Seas Bordering Greece

Greece's coastline (13,676 km — 11th longest globally) borders three seas:

• Aegean Sea (east) — between Greece and Turkey; contains Cyclades, Dodecanese, Sporades, Crete
• Ionian Sea (west) — between Greece and Italy; contains Ionian Islands (Corfu, Kefalonia, Zakynthos)
• Mediterranean Sea (south) — specifically the Cretan Sea and Libyan Sea south of Crete and the Peloponnese

The Corinth Canal (6.4 km) connects the Aegean (via Saronic Gulf) to the Ionian (via Gulf of Corinth), technically making the Peloponnese an island.

These seas define Greece's maritime climate, fisheries, trade routes, naval history, and island tourism economy. The Aegean alone has 1,400+ islands (227 inhabited).