Main article: Cell membrane. The cell membrane, or plasma membrane, is a biological membrane that surrounds the cytoplasm of a cell. In animals, the plasma membrane is the outer boundary of the cell, while in plants and prokaryotes it is usually covered by a cell wall.
Egypt lies between the Red Sea to the east and the Mediterranean Sea to the north. The Red Sea is a narrow, landlocked sea that separates Africa from the Arabian Peninsula. It links to the Mediterranean through the Gulf of Suez and the Suez Canal.
1 The namesake Mediterranean Sea including the Black Sea, the Sea of Azov, the Aegean Sea, the Adriatic Sea, the Ligurian Sea, the Balearic Sea, the Tyrrhenian Sea, the Ionian Sea, and the Sea of Marmara.  The Arctic Ocean (or the Arctic Mediterranean Sea, considered an ocean by many)