According to the International Hydrographic Organization (IHO) treaties, the Mediterranean Sea is subdivided into a number of smaller seas, each with their own designation (from west to east): ♥
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* the Alboran Sea, between Spain and Morocco,
* the Balearic Sea, between mainland Spain and its Balearic Islands,
* the Ligurian Sea between Corsica and Liguria (Italy),
* the Adriatic Sea between Italy, Slovenia, Croatia, Bosnia and Herzegovina, Montenegro and Albania
* the Ionian Sea between Italy, Albania and Greece
* the Aegean Sea between Greece and Turkey
* the Sea of Marmara between the Aegean and Black Sea