Talar in Balochi, or 'Island of the Seven Hills', is a small, uninhabited island in the northern tip of the Arabian Sea in Pakistan's territorial waters. Socotra, also spelled Soqotra, is the largest island, being part of a small archipelago of four islands. It lies some east of the Horn of Africa and south of the Arabian Peninsula. Masirah and the five Khuriya Muriya Islands are islands off the southeastern coast of Oman. Major Cities There are many major cities and towns in the coast of Arabian Sea. Some of the major cities are Mumbai, Muscat, Karachi, Aden, Salalah, Thiruvananthapuram, Kochi, Kozhikode, Kollam, Mangalore, Bhavnagar, Jamnagar, Mogadishu, Gwadar, Abu Dhabi, Mundra, Dubai, Kannur, Panaji, Karwar, Udupi, Ratnagiri, Murdeshwar, Colombo, Takamaka, and Dhiffushi. Oxygen minimum zone The Arabian Sea has one of the world's three largest oceanic oxygen minimum zones (OMZ), or “dead zones,” along with the eastern tropical North Pacific and the eastern tropical South Pacific. OMZs have very low levels of oxygen, sometimes undetectable by standard equipment. The Arabian Sea's OMZ has the lowest levels of oxygen in the world, especially in the Gulf of Oman. Causes of the OMZ may include untreated sewage as well as high temperatures on the Indian subcontinent, which increase winds blowing towards India, bringing up nutrients and reducing oxygen in the Arabian Sea's waters. In winter, phytoplankton suited to low-oxygen conditions turn the OMZ bright green. Environment and wildlife The wildlife of the Arabian sea is diverse, and entirely unique because of the geographic distribution. Arabian Sea warming Recent studies by Indian Institute of Tropical Meteorology confirmed that the Arabian Sea is warming monotonously; it possibly is due to by global warming. Underwater tunnel A rail tunnel under the sea is planned. It will link the UAE with the western coast of India. The tunnel will be supported by pontoons and will be nearly 2000 kilometres in length. Native names See also Indian Ocean Rim Association North Indian Ocean tropical cyclone Piracy off the coast of Somalia References Sources A book and Atlas External links Arabian Sea (World Wildlife Fund) Arabian Peninsula Marine ecoregions India–Pakistan border Oman–Yemen border Bodies of water of Pakistan Bodies of water of India Bodies of water of Oman Seas of Yemen Seas of Iran Bodies of water of Somalia Bodies of water of Iran Bodies of water of the Maldives Seas of the Indian Ocean Seas of Asia