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
Rugby union in the Arab states of the Persian Gulf Rugby union in the Arab states of the Persian Gulf Rugby union in the Arab states of the Persian Gulf is a minor, but growing sport. The Arabian Gulf rugby union team is currently ranked 40th in the International Rugby Board's world rankings which ranks the IRB's ninety-five full member countries. Out of 4645 registered rugby union players in the Persian Gulf region, 2950 are pre-teens or teenagers. The governing body for rugby in the Arab states of the Persian Gulf, until 2010, is the Arabian Gulf RFU, whose headquarters are located in Dubai, United Arab Emirates. Previously known as