Geographic location
Marsden
Scotia Sea
12
Weddell
8
Weddell Sea
8
Goyena
4
Orcadas
4
Southern Ocean
4
Austral
3
Drake Passage
3
Ross Sea
3
Zapiola
3
Zvezda
3
Pioner
2
Riiser-Larsen
2
Riiser-Larsen Sea
2
San Juan
2
Andrus
1
Atka
1
Augusto
1
Diaguita
1
Gizhiga
1
Glennon
1
Helland
1
Hudson
1
Indian
1
Muksun
1
Prydz Bay
1
Scoresby
1
Yamana
1
Zubov
1