The Sea of Marmara \ / ˈmɑrmərə \ / ( Turkish : Marmara Denizi , Greek : Θάλασσα του Μαρμαρά ) , also known as the Sea of Marmora or the Marmara Sea , and in the context of classical antiquity as the Propontis ( Greek : Προποντίς ) , is the inland sea , entirely within the borders of Turkey , that connects the Black Sea to the Aegean Sea , thus separating Turkey 's Asian and European parts .
The Sea of Marmara , also known as the Sea of Marmora or the Marmara Sea , is the inland sea that connects the Black Sea to the Aegean Sea .