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Arabian Sea
LocationEast Africa, West Asia and South Asia
Coordinates14°N 65°E / 14°N 65°E / 14; 65
Part ofIndian Ocean
Basin countriesIndia
Sri Lanka
Max. width2,400 km (1,500 mi)
Surface area3,862,000 km2 (1,491,000 sq mi) (3,600,000 to 4,600,000 km2 in various sources)
Max. depth4,652 m (15,262 ft)
IslandsAstola island, Basavaraj Durga Island, Lakshadweep, Masirah Island, Piram Island, Pirotan, Socotra
Arabian Sea

The Arabian Sea (Arabic: اَلْبَحرْ ٱلْعَرَبِيُّ, romanizedAl-Bahr al-ˁArabī) is a region of sea in the northern Indian Ocean, bounded on the west by the Arabian Peninsula, Gulf of Aden and Guardafui Channel, on the northwest by Gulf of Oman and Iran, on the north by Pakistan, on the east by India, and on the southeast by the Laccadive Sea[1] and the Maldives, on the southwest by Somalia.[2] Its total area is 3,862,000 km2 (1,491,000 sq mi) and its maximum depth is 4,652 meters (15,262 ft). The Gulf of Aden in the west connects the Arabian Sea to the Red Sea through the strait of Bab-el-Mandeb, and the Gulf of Oman is in the northwest, connecting it to the Persian Gulf.

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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 Arabian Sea has been crossed by many important marine trade routes since the 3rd or 2nd millennium BCE. Major seaports include Kandla Port, Mundra Port, Pipavav Port, Dahej Port, Hazira Port, Mumbai Port, Nhava Sheva Port (Navi Mumbai), Mormugão Port (Goa), New Mangalore Port and Kochi Port in India, the Port of Karachi, Port Qasim, and the Gwadar Port in Pakistan, Chabahar Port in Iran and the Port of Salalah in Salalah, Oman. The largest islands in the Arabian Sea include Socotra (Yemen), Masirah Island (Oman), Lakshadweep (India) and Astola Island (Pakistan). The countries with coastlines on the Arabian Sea are Yemen, Oman, Pakistan, Iran, India and the Maldives.[3]


The International Hydrographic Organization defines the limits of the Arabian Sea as follows:[4]

Border and basin countries

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

Alternative names

The Arabian Sea historically and geographically has been referred to with different names by Arabian and European geographers and travelers, including Erythraean Sea, Indian Sea, Oman sea,[7] Erythraean, Persian Sea in para No 34-35 of the Voyage.[8] In Indian folklore, it is referred to as Darya, Sindhu Sagar, and Arab Samudra.[9][10][11]

Arab geographers, sailors and nomads used to call this sea by different names, including the Akhdar (Green) Sea, Bahre Fars (Persian Sea), the Ocean Sea, the Hindu sea, the Makran Sea, the sea of Oman; among them Zakariya al-Qazwini, Al-Masudi, Ibn Hawqal and Hafiz-i Abru. They wrote: "The green sea and Indian sea and Persian sea are all one sea and in this sea there are strange creatures." in Iran and Turkey people call it Oman sea.[12] In the Periplus of the Erythraean Sea, as well as in some ancient maps, Erythraean Sea refers to the whole area of the northwestern Indian Ocean, including the Arabian Sea.[13]

Trade routes

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. [14]

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, Kochi Port, Mumbai Port, and Mormugão.[15][16]

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 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.[17]


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). Next to these islands are the Maldives islands. These islands are all part of the Lakshadweep-Maldives-Chagos group of islands.

Zalzala Koh was an island which was around for only a few years. After the 2013 earthquake in Pakistan, the mud island was formed. By 2016 the island was finished.[18]

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 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, Tirur, Kollam, Mangalore, Bhavnagar, Jamnagar, Mogadishu, Gwadar, Abu Dhabi, Mundra, Dubai, Kannur, Panaji, Karwar, Udupi, Ratnagiri, Murdeshwar, Colombo, Takamaka, and Dhiffushi.

Oxygen minimum zone

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

Environment and wildlife

The wildlife of the Arabian sea is diverse, and entirely unique because of the geographic distribution.

Arabian Sea warming

Recent studies[22][23][24] 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.[25] [26]

Native names

Regional endonyms for the Arabian sea in languages of the coastal regions surrounding it.

Language Name Romanized
Arabic اَلْبَحرْ ٱلْعَرَبِيُّ Al-Bahr al-ˁArabī
Divehi ޢަރަބި ކަނޑު arabi kanḍu
Gujarati અરબી સમુદ્ર arabī samudra
Hindi अरब सागर arab sāgar
Tamil அரபிகடல் aṟabikkaḍal
Kannada ಅರಬ್ಬೀ ಸಮುದ್ರ arabbī samudra
Malayalam അറബിക്കടൽ aṟabikkaḍal
Marathi अरबी समुद्र arabī samudra
Persian دریای عرب darya-i-arab
Sindhi عربي سمنڊ arabī samaṇḍ
Somali Bada Carbeed
Urdu بحیرہ عرب bahīrā arab

See also


  1. ^ Banse, Karl, and Charles R. McClain. "Winter blooms of phytoplankton in the Arabian Sea as observed by the Coastal Zone Color Scanner." Marine Ecology Progress Series (1986): 201-211.
  2. ^ Pham, J. Peter. "Putting Somali piracy in context." Journal of Contemporary African Studies 28.3 (2010): 325-341.
  3. ^ a b Arabian Sea, Encyclopædia Britannica
  4. ^ "Limits of Oceans and Seas, 3rd edition" (PDF). International Hydrographic Organization. 1953. pp. 20–21. Archived from the original (PDF) on 7 December 2017. Retrieved 28 December 2020.
  5. ^ "Iran". The World Factbook (2023 ed.). Central Intelligence Agency.
  6. ^ "Introduction to Pakistan: Section 5: Coastline". Archived from the original on 2020-06-26. Retrieved 2020-08-28.
  7. ^ "Kamat's Potpourri: The Arabian Sea".
  8. ^ "The Voyage around the Erythraean Sea".
  9. ^ "Kamat's Potpourri: The Arabian Sea".
  10. ^ "The Voyage around the Erythraean Sea".
  11. ^ "The Periplus of the Erythraean Sea". Archived from the original on 2013-12-02. Retrieved 2012-04-03.
  12. ^ "Ministry of MoFA Iran: Introducing a Book and Atlas".
  13. ^ "1794, Orbis Veteribus Notus by Jean Baptiste Bourguignon d'Anville". 1794.
  14. ^ "Documents on the Persian Gulf's name the eternal heritage ancient time by Dr.Mohammad Ajam".
  15. ^ "TRAFFIC HANDLED AT MAJOR PORTS (LAST 7 YEARS)" (PDF). Archived (PDF) from the original on 2022-10-09.[permanent dead link]
  16. ^ "WORLD PORT RANKINGS" (PDF). 2009. Archived (PDF) from the original on 2022-10-09.
  17. ^ Salalah’s versatility beats the slump Archived October 25, 2012, at the Wayback Machine, Port of Salalah
  18. ^ "Gwadar's quake island disappears". 31 December 2016.
  19. ^ Lüke, Claudia; Speth, Daan R.; Kox, Martine A. R.; Villanueva, Laura; Jetten, Mike S. M. (2016-04-07). "Metagenomic analysis of nitrogen and methane cycling in the Arabian Sea oxygen minimum zone". PeerJ. 4: e1924. doi:10.7717/peerj.1924. ISSN 2167-8359. PMC 4830246. PMID 27077014.
  20. ^ Queste, Bastien Y.; Vic, Clément; Heywood, Karen J.; Piontkovski, Sergey A. (2018). "Physical Controls on Oxygen Distribution and Denitrification Potential in the North West Arabian Sea". Geophysical Research Letters. 45 (9): 4143–4152. Bibcode:2018GeoRL..45.4143Q. doi:10.1029/2017GL076666. ISSN 1944-8007.
  21. ^ Bhanoo, S.N. "A Green Blanket on the Arabian Sea". The New York Times.
  22. ^ Roxy, Mathew Koll; Ritika, Kapoor; Terray, Pascal; Murtugudde, Raghu; Ashok, Karumuri; Goswami, B. N. (16 June 2015). "Drying of Indian subcontinent by rapid Indian Ocean warming and a weakening land-sea thermal gradient". Nature Communications. 6 (1): 7423. Bibcode:2015NatCo...6.7423R. doi:10.1038/ncomms8423. ISSN 2041-1723. PMID 26077934. S2CID 7061499.
  23. ^ Pratik, Kad; Parekh, Anant; Karmakar, Ananya; Chowdary, Jasti S.; Gnanaseelan, C. (1 April 2019). "Recent changes in the summer monsoon circulation and their impact on dynamics and thermodynamics of the Arabian Sea". Theoretical and Applied Climatology. 136 (1): 321–331. Bibcode:2019ThApC.136..321P. doi:10.1007/s00704-018-2493-6. ISSN 1434-4483. S2CID 126114281.
  24. ^ Roxy, M. K.; Gnanaseelan, C.; Parekh, Anant; Chowdary, Jasti S.; Singh, Shikha; Modi, Aditi; Kakatkar, Rashmi; Mohapatra, Sandeep; Dhara, Chirag; Shenoi, S. C.; Rajeevan, M. (2020). "Indian Ocean Warming". Assessment of Climate Change over the Indian Region: A Report of the Ministry of Earth Sciences (MoES), Government of India. Springer. pp. 191–206. doi:10.1007/978-981-15-4327-2_10. ISBN 978-981-15-4327-2. S2CID 226643638.
  25. ^ "A 2,000-km-long underwater rail will connect Mumbai to the UAE very soon! | Times of India Travel". The Times of India.
  26. ^ "The UAE wants an underwater bullet train to India". 5 December 2018.


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

External links

Media related to Arabian Sea at Wikimedia Commons

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