Some examples of seas are: (These are the 7 seas)
El golfo Pérsico - The Persian Gulf.
El mar Negro -The Black Sea
El mar Caspio -The Caspian Sea
El mar Rojo - The Red Sea
El mar Mediterráneo - The Mediterranean Sea
El mar Adriático -The Adriatic sea
El mar de Arabia - The Arabian Sea
I figured I would put it in Spanish and English just in case.
Hope this Helps!!
