Back to GIWA Regions and network
Please note that this draft map is under production. It only gives rough indications of the geographic location of the 66 water regions. It contains no information on drainage areas, and is thus not to be viewed as more than a simple geographic guide. In some cases the Subregional numbering and delineations does not correspond to the table below. This map will be updated regularly by the GIWA Core Team.
Click for larger map (1MB)


* indicates Large Marine Ecosystem, LME:
"regions of ocean space encompassing
coastal areas from river basins and estuaries
to the seaward boundary of continental shelves and the seaward margins of coastal current systems. They are relatively large regions characterized by distinct bathymetry, hydrography, productivity, and tropically dependent populations." See also Rhode Island University map of LMEs.


1. Arctic

North Atlantic

2. Gulf of Mexico*
3. Caribbean Sea*
4. Caribbean Islands
5. Southeast Shelf*
6. Northeast Shelf*
7. Scotian Shelf*
8. Gulf of St. Lawrence
9. Newfoundland Shelf*
10. Baffin Bay, Labrador Sea, Canadian Arch.
11. Barents Sea*
12. Norwegian Sea*
13. Faroe plateau
14. Iceland Shelf *
15. East Greenland Shelf*
16. West Greenland Shelf*
17. Baltic Sea*
18. North Sea*
19. Celtic-Biscay Shelf*
20. Iberian Coastal*

Back to GIWA Regions and network


21. Mediterranean Sea*
22. Black Sea*
23. Caspian Sea
24. Aral Sea

North Pacific

25. Gulf of Alaska*
26. California Current*
27. Gulf of California*
28. East Bering Sea*
29. West Bering Sea*
30. Sea of Okhotsk*
31. Oyashio Current*
32. Kuroshio Current*
33. Sea of Japan*
34. Yellow Sea*
35. Bohai Sea
36. East-China Sea*
37. Hawaiian Archipelago*

Eastern South America

38. Patagonian Shelf*
39. Brazil Current*
40. Northeast Brazil Shelf*
40a. Brazilian Northeast
40b. Amazon

Sub-Saharan Africa

41. Canary Current*
42. Guinea Current*
43. Lake Chad
44. Benguela Current*
45a. Agulhas Current*
45b. Indian Ocean Islands


46. Somali Coastal Current*
47. East African Rift Valley Lakes

Indian Ocean

48. Gulf of Aden
49. Red Sea*
50. The Gulf
51. Jordan (land-locked river system)
52. Arabian Sea*
53. Bay of Bengal

Southeast Asia and the South Pacific

54. South China Sea*
55. Mekong River
56. Sulu-Celebes Sea*
57. Indonesian Seas*
58. North Australian Shelf*
59. Coral Sea Basin
60. Great Barrier Reef*
61. Great Australian Bight
62. Small Island States
63. Tasman Sea

Southeast Pacific

64. Humboldt Current*
65. Eastern Equatorial Pacific


66. Antarctic*

Global International Waters Assessment, GIWA
SE- 391 82 Kalmar, Sweden
Phone: +46- 480 44 73 53. Fax: +46- 480 44 73 55.
West Bering Sea Antarctic Antarctic Eastern Equatorial Current Humbolt Current Tasman Sea Small Island States Small Island States Great Australian Bight Great Barrier Reef Coral Sea Basin North AustralianShelf Indonesian Seas Sulu-Celebes Sea Mekong River East Greenland Shelf West Greenland Shelf South China Sea Bay of Bengal Arabian Sea Jordan (land-locked river system) Persian Gulf Red Sea Gulf of Aden East African Rift Valley Lakes Somali Coastal Current Agulhas Current Indian Ocean Islands Benguela Current Lake Chad Guinea Current Canary Current Brazilian Northeast Amazon Northeast Brazil Shelf Brazil Current Patagonian Shelf Hawaiian Archipelago East-China Sea Bohai Sea Yellow Sea Sea of Japan Kuroshio Current Oyashio Current Sea of Okhotsk East Bering Sea West Bering Sea Gulf of California California Current Gulf of Alaska Aral Sea Caspian Sea Black Sea Mediterranean Sea Iberian Coastal Celtic-Biscay Shelf North Sea Baltic Sea Iceland Shelf Faroe Plateau Norwegian Sea Barents Sea Baffin Bay, Labrador Sea, Canadian Arhipelago Newfoundland Shelf Gulf of St. Lawrence Scotian Shelf Northeast Shelf Southeast Shelf Carribean Islands Carribean Sea Gulf of Mexico Arctic