The Emirate of Dubai extends along the Persian Gulf coast of the UAE for approximately . Dubai has an area of , which is equivalent to 5% of the country's total area, excluding the islands. The Emirate of Sharjah extends along approximately  of the UAE's Persian Gulf coastline and for more than  into the interior. The northern emirates which include Fujairah, Ajman, Ras al-Khaimah, and Umm al-Qaiwain all have a total area of . There are two areas under joint control. One is jointly controlled by Oman and Ajman, the other by Fujairah and Sharjah.