Geographic location
Southern Ocean
109
Indian
48
King George Island
20
Canada
14
Weddell
13
Atka
6
Neumayer
6
Neumayer Station
6
Filchner Trough
5
Austral
2
Drake Passage
2
Pacific
2
Astrid Ridge
1
Balch
1
Riiser-Larsen
1
Riiser-Larsen Sea
1
SANAE
1
Sandwich Islands
1
Scripps
1
South Georgia
1
South Sandwich Islands
1
Torge Plateau
1
Weddell Sea
1