The Mar de Mármara is a small sea located in northwestern Turkey, connecting the Mar Negro to the Mar Egeo. It serves as a natural boundary between the continents of Asia and Europa. The sea is approximately 280 kilometers long and 80 kilometers wide, featuring several islands, the largest being Isla de Príncipe. The Mar de Mármara plays a crucial role in maritime trade, with major ports like Estambul and Tekirdağ situated along its shores. The sea is also known for its rich biodiversity, supporting various marine species and ecosystems. Its strategic location makes it an important waterway for shipping and transportation.