What is a Sea?• The word “sea” is used to describe the totality of interconnected bodies of
water also known as the World Ocean.• The word “sea” is also used to describe much smaller or specific bodies of
water.
How many?• There are exactly 7 seas in the entire world.
• The Mediterranean• The Caspian• The Adriatic• The Red Sea• The Black Sea• The Persian Gulf• The Indian Ocean
The Mediterranean Sea• The Mediterranean is connected to the Atlantic Ocean surrounded by
the Mediterranean region and almost completely enclosed by land.• Mediterranean is derived from a Greek word meaning “inland”.
The Caspian Sea• The Caspian Sea is the largest enclosed inland body of water on
Earth by area, variously classed as the world's largest lake or a full-fledged sea.
• It is in an endorheic basin (it has no outflows)• The Caspian Depression (The sea’s northern part) is one of the
lowest points on earth.
The Adriatic Sea• The Adriatic Sea is a body of water separating the Italian Peninsula
from the Balkan peninsula and the Apennine Mountains from the Dinaric Alps and adjacent ranges.
• The Adriatic Sea sits on the Apulian or Adriatic Microplate, which separated from the African Plate in the Mesozoic era.
The Red Sea• The Red Sea is also known as the Erythraean Sea• It is a seawater inlet of the Indian Ocean, lying between Africa and
Asia.
The Black Sea• The Black Sea is bounded by Europe, Anatolia and the Caucasus, and
drains through the Mediterranean into the Atlantic Ocean, via the Aegean Seas and various straits.
• The Black Sea outflow is cooler and less saline, and floats over the warm, more saline Mediterranean inflow leading to a significant anoxic layer well below the surface waters.
The Persian Gulf• The Persian Gulf is a mediterranean sea which is located in Western
Asia between Iran to the northeast and the Arabian Peninsula to the southwest. The Persian Gulf is an extension of the Indian Ocean (Gulf of Oman) through the Strait of Hormuz.
• The Gulf was a battlefield of the 1980–1988 Iran-Iraq War, in which each side attacked the other's oil tankers.