IHO Marine Regions

 

The International Hydrographic Organization is an inter-governmental technical and consultative body set up in 1921 to provide safe navigation and protection to the marine environment. Its main duty is to standardise all features of nautical charts, the nomenclature given to underwater relief and other navigation-related features. All the seas in the world are thus regionalised and divided into maritime basins according to their oceanographical features, respecting the denominations that they have received throughout history.

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AoA regions

Source: VLIZ (2005). IHO Sea Areas. Available online at http://www.marineregions.org/.

 

Number Average surface area (sq km) Total surface area (sq km)
Marine Regions 101 3.592.323 362.824.579

 

Seas Area (sq km)
Inner Seas off the West Coast of Scotland 43.940
Mediterranean Sea - Western Basin 477.535
Mediterranean Sea - Eastern Basin 1.168.627
Sea of Marmara 11.887
Black Sea 422.235
Sea of Azov 41.274
Irish Sea and St. George's Channel 46.007
Bristol Channel 5.824
English Channel 81.297
Bay of Biscay 174.320
Celtic Sea 216.843
Kattegat 36.070
Skaggerak 32.632
North Sea 527.400
Greenland Sea 1.216.345
Norwegian Sea 1.443.540
White Sea 89.556
Barentsz Sea 1.422.378
Kara Sea 896.069
Laptev Sea 541.714
East Siberian Sea 637.377
Chukchi Sea 353.244
Lincoln Sea 35.674
Beaufort Sea 440.124
Arctic Ocean 5.147.468
Northwestern Passages 1.052.077
Baffin Bay 545.001
Hudson Bay 848.012
Hudson Strait 197.080
Davis Strait 776.352
Labrador Sea 877.013
Gulf of St-Lawrence 281.989
Bay of Fundy 16.674
Gulf of Mexico 1.546.421
Caribbean Sea 2.871.349
North Atlantic Ocean 34.225.484
Rio de La Plata 32.690
Gulf of Guinea 739.974
Gulf of Suez 10.612
Gulf of Aqaba 3.701
Red Sea 446.553
Gulf of Aden 258.752
Gulf of Oman 111.220
Persian Gulf 244.868
Laccadive Sea 841.393
Arabian Sea 4.232.223
Mozambique Channel 1.377.918
Bay of Bengal 2.195.986
Andaman or Burma Sea 606.552
Malacca Strait 196.513
Singapore Strait 2.948
Gulf of Thailand 295.282
South China Sea 3.329.135
Eastern China Sea 751.020
Yellow Sea 413.817
Great Australian Bight 1.291.317
Bass Strait 111.523
Tasman Sea 3.318.494
Coral Sea 4.035.711
Bismarck Sea 357.855
Solomon Sea 736.311
Inland Sea 18.696
Philippine Sea 5.695.060
Japan Sea 1.075.127
Sea of Okhotsk 1.658.834
Bering Sea 2.433.324
Gulf of Alaska 419.040
The Coastal Waters of Southeast Alaska and British Columbia 134.078
Gulf of California 179.748
South Atlantic Ocean 40.281.100
Indian Ocean 57.874.969
North Pacific Ocean 64.320.294
Gulf of Bothnia 119.620
Gulf of Finland 30.105
Gulf of Riga 18.510
Strait of Gibraltar 1.630
Alboran Sea 54.173
Balearic Sea 80.477
Ligurian Sea 15.325
Tyrrhenian Sea 217.497
Adriatic Sea 140.320
Ionian Sea 173.493
Aegean Sea 192.026
South Pacific Ocean 76.298.483
Southern Ocean 22.012.666
Baltic Sea 218.830
Sulu Sea 331.492
Celebes Sea 471.486
Molukka Sea 217.411
Gulf of Tomini 55.972
Halamahera Sea 70.610
Ceram Sea 161.353
Banda Sea 691.317
Arafura Sea 1.014.531
Timor Sea 426.621
Flores Sea 103.271
Gulf of Boni 33.447
Bali Sea 39.802
Makassar Strait 194.555
Java Sea 554.630
Savu Sea 105.456