Thracian Sea
The Thracian Sea ( Greek Θρακικό Πέλαγος Thrakiko Pelagos , Turkish Trakya Denizi ) is a tributary of the Aegean Sea in the European Mediterranean . It is located south of the coast of Macedonia and Thrace , between the Chalkidiki peninsula and northwestern Turkey with the Gallipoli peninsula . The southern border to the rest of the Aegean is roughly 40 degrees , in the east the Dardanelles connect the Thracian with the Sea of Marmara .
The coast is divided into several bays, from west to east the Gulf of Ierissos , the Strymonian Gulf , the Bay of Kavala and the Bay of Saros . Some water-rich rivers drain into the sea, namely Struma , Nestos and Mariza .
The larger islands include Thasos , Samothraki and Bozcaada , and Limnos and Gökçeada on the southern edge .
The sea is of economic importance primarily due to the occurrence of oil and natural gas in the North Aegean Shelf . Thasos, as the geological extension of the Greek Rhodopes, is an important area for mining and metal extraction . Larger ports are in Amfipoli , Kavala , Alexandroupoli , Thasos, Samothrace and Bozcaada.
Coordinates: 40 ° 22 ′ N , 25 ° 10 ′ E