The Seven Seas according to Arabian literature during Medieval times.
The Arabs and their near neighbours considered the Seven Seas to be the seas that they encountered in their voyages to The East. They were trading routes in ancient times and since the time of Muhammad, they are the places where Islam spread and is widely practised.
Give the modern English name with the name at the time translated given
Arab seafarers may have also considered other important seas nearby which they navigated regularly, including the Black Sea, Caspian Sea, Red Sea, Mediterranean Sea, and Adriatic Sea