Persian Gulf flooding of the basin started 15,000 years ago due to rising sea levels of the Holocene glacial retreat. This inland sea of some is connected to the Gulf of Oman in the east by the Strait of Hormuz; and its western end is marked by the major river delta of the Shatt al-Arab, which carries the waters of the Euphrates and the Tigris. In Iran this is called "Arvand Rood", where "Rood" means "river". Its length is , with Iran covering most of the northern coast and Saudi Arabia most of the southern coast. The Persian Gulf is about wide
Senior Naval Officer, Persian Gulf Senior Naval Officer, Persian Gulf The Senior Naval Officer, Persian Gulf was a British Royal Navy command appointment who was responsible for administering the Persian Gulf Station military formation including its establishments and naval forces known as the Persian Gulf Squadron later called the Persian Gulf Division. Initially located at Basidu, Qishm Island in Persia (c. 1823-1850-1935), then Henjam IslandPersia, (1911-1935) and finally Ras Al-Jufair, Bahrain from 1935 to 1972. British naval presence in the Persian Gulf began in the early nineteenth century with temporary naval forces assembled for specific operations until the establishment of a more constant naval force