Arabian Sea

The Arabian Sea's surface area is about 3,862,000 km² (1,491,130 sq mi).[3] The maximum width of the sea is approximately 2,400 km (1,490 mi), and its maximum depth is 4,652 metres (15,262 ft). The biggest river flowing into the sea is the Indus River.

The Arabian Sea has two important branches — the Gulf of Aden in the southwest, connecting with the Red Sea through the strait of Bab-el-Mandeb; and the Gulf of Oman to the northwest, connecting with the Persian Gulf. There are also the gulfs of Khambhat and Kutch on the Indian Coast.

The countries with coastlines on the Arabian Sea are Yemen, Oman, Pakistan, Iran, India and the Maldives.[3]

Border and Basin countries:[5][6]

1.  India - 2,500 km coastline
2.  Pakistan - 1,050 km coastline
3.  Iran
4.  Maldives
5.  Oman
6.  Yemen
7.  Somalia

The Arabian Sea historically and geographically has been referred to with many different names by Arabian and European geographers and travelers, including Indian Sea, Sindhu Sagar,[7] Darya, Sindhu Sagar, and Arab Samudra,[7] Erythraean Sea,[8] Sindh Sea, and Akhzar Sea. In Indian folklore, it is referred to as Darya, Sindhu Sagar, and Arab Samudra.[9][10][11]

1. Indian Sea
2. Sindhu Sagar
3. Darya
4. Arab Samudra
5. Erythraean Sea
6. Sindh Sea
7. Behera Arab
8. Akhzar Sea
9. Mare di Persia
10. Persian Sea

Ibn Khordadbeh, Ibn Sa'id al-Maghribi, Muhammad al-Idrisi, Istakhri, Mahmud al-Kashgari, Khashkhash Ibn Saeed Ibn Aswad and Muhammad ibn Musa al-Khwarizmi had mentioned the sea as Persian sea and sea of Mokran.[12] some of the midival map including the map by Vincenzo Maria Coronelli, 1693 had mentioned the Persian sea and also Makran.[13] Cornelius Le Brun's Year 1718 Map. On this map, the name of the Oman Sea is recorded as "Gulf of Hormuz". The name "Arabian Sea" has been informed of a sea off the coast of Yemen, and you can rename it the Arabian Sea, as the "Indian Sea" church. Map of Iran in the 16th century by Abraham Ortelius in which the name of the Persian Sea and the Indian Sea appear.[14]

Arab sailors and nomads used to call this sea by different names, including the green sea, the ocean sea, the Hindu sea, the Makran Sea, the Gulf of Oman, and among them the Zakariya al-Qazwini, Al-Masudi and Ibn Hawqal. They wrote: “The green sea in the east and the sea of darkness in the west is the sea of strange creatures (Zakariya al-Qazwini) And the enchanted islands (Al-Masudi) (Hafiz-i Abru). Abdullah bin Lotf bin Abdul Rashid, a geographic historian and tourist mentioned in the book History of Islam and Iran, explains the Green Sea and says: “It is also called the Sea of India and it connects with the Persian Sea.” There is a lot of attribution until the name proves this sea, which is the Arabian Sea or the Arabian Sea.[15]

• 
  Dugong mother and her offspring in shallow waters.
• 
  Basora-Persian Sea.
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  Soulier, E.; Andriveau-Goujon, MER ERYTHREE 1838.
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  Critically endangered Arabian humpback whales off Dhofar, Oman.
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  Palm and sunset in Minoo Island, Iran.
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  A horizontal Malabar Coast miniature, a reprint by Petrus Bertius, 1630
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  Names, routes and locations of the Periplus of the Erythraean Sea
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  1658 Jansson Map of the Indian Ocean (Erythrean Sea)
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  The western part of the Indian Ocean, by Vincenzo Maria Coronelli, 1693, from his system of global gores the south
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  The western part of the Indian Ocean, by Vincenzo Maria Coronelli, 1693 from his system of global gores the Makran coast

Names, routes and locations of the Periplus of the Erythraean Sea.

The Arabian Sea has been an important marine trade route since the era of the coastal sailing vessels from possibly as early as the 3rd millennium BCE, certainly the late 2nd millennium BCE through the later days known as the Age of Sail. By the time of Julius Caesar, several well-established combined land-sea trade routes depended upon water transport through the sea around the rough inland terrain features to its north.

These routes usually began in the Far East or down river from Madhya Pradesh, India with transshipment via historic Bharuch (Bharakuccha), traversed past the inhospitable coast of modern-day Iran, then split around Hadhramaut, Yemen into two streams north into the Gulf of Aden and thence into the Levant, or south into Alexandria via Red Sea ports such as Axum. Each major route involved transhipping to pack animal caravan, travel through desert country and risk of bandits and extortionate tolls by local potentates.

This southern coastal route past the rough country in the southern Arabian Peninsula was significant, and the Egyptian Pharaohs built several shallow canals to service the trade, one more or less along the route of today's Suez Canal, and another from the Red Sea to the Nile River, both shallow works that were swallowed up by huge sand storms in antiquity. Later the kingdom of Axum arose in Ethiopia to rule a mercantile empire rooted in the trade with Europe via Alexandria. [16]

Major ports

Jawaharlal Nehru Port in Mumbai is the largest port in the Arabian Sea, and the largest container port in India. Major Indian ports in the Arabian Sea are Mundra Port, Kandla Port, Nava Sheva, Vizhinjam International Seaport The Vizhinjam International Deepwater Multipurpose Seaport, also known as the Vizhinjam International Seaport and the Port of Trivandrum . Kochi Port, Mumbai Port, and Mormugão.[17][18]

The Kochi Port located on the south-west coast of India is the nearest Indian port to the international shipping routes, as well as one of the largest and busiest ports serving the Arabian Sea. Seen here is the International Container Transshipment Terminal, the only such facility in India.

The Port of Karachi, Pakistan's largest and busiest seaport lies on the coast of the sea. It is located between the Karachi towns of Kiamari and Saddar.

The Gwadar Port of Pakistan is a warm-water, deep-sea port situated at Gwadar in Balochistan at the apex of the Arabian Sea and at the entrance of the Persian Gulf, about 460 km west of Karachi and approximately 75 km (47 mi) east of Pakistan's border with Iran. The port is located on the eastern bay of a natural hammerhead-shaped peninsula jutting out into the Arabian Sea from the coastline.

Port of Salalah in Salalah, Oman is also a major port in the area. The International Task Force often uses the port as a base. There is a significant number of warships of all nations coming in and out of the port, which makes it a very safe bubble. The port handled just under 3.5m teu in 2009.[19]

Landsat view of Socotra, an island of Yemen.

There are several islands in the Arabian Sea, with the most important ones being Lakshadweep Islands (India), Socotra (Yemen), Masirah (Oman) and Astola Island (Pakistan).

The Lakshadweep Islands (formerly known as the Laccadive, Minicoy, and Aminidivi Islands) is a group of islands in the Laccadive Sea region of Arabian Sea, 200 to 440 km (120 to 270 mi) off the southwestern coast of India. The archipelago is a union territory and is governed by the Union Government of India. The islands form the smallest union territory of India with their total surface area being just 32 km² (12 sq mi). The islands are the northernmost of the Lakshadweep-Maldives-Chagos group of islands.

Astola Island, also known as Jezira Haft 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 240 km (150 mi) east of the Horn of Africa and 380 km (240 mi) south of the Arabian Peninsula.

Masirah is an island off the east coast of Oman.

Phytoplankton bloom over the Arabian Sea in winter (NASA)

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.[20] The Arabian Sea's OMZ has the lowest levels of oxygen in the world, especially in the Gulf of Oman.[21] 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.[22]

• Indian Ocean Rim Association
• North Indian Ocean tropical cyclone
• Piracy off the coast of Somalia

 This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). "Arabian Sea". Encyclopædia Britannica (11th ed.). Cambridge University Press.

• Documents on the Persian Gulf's name
• A book and Atlas

Media related to Arabian Sea at Wikimedia Commons

• Arabian Sea (World Wildlife Fund)