Geographic location
Indian
Southern Ocean
508
Antarctic
14
Agulhas Basin
7
Pacific
6
Lazarev
5
Lazarev Sea
5
Atka
4
Filchner Trough
4
Maud Rise
4
Norway
4
Astrid Ridge
2
Austral
2
Orcadas
2
The Antarctic
2
Weddell
2
Weddell Sea
2
America-Antarctic Ridge
1
Antarctic Ocean
1
Antarctic Peninsula
1
Arctic
1
Argentine
1
Argentine Islands
1
Barents Sea
1
Bergen
1
Conrad Rise
1
Henson
1
Kobbefjord
1
Longhurst
1
Marsden
1
Morrow
1
Queensland
1
Van Veen
1