Geographic location
Antarctic
50
The Antarctic
Pacific
44
Wever
38
Reimer
28
Kozlova
22
New Zealand
22
Diablo
20
Bellingshausen Basin
18
Drygalski
18
O'Connor
16
Hayes
12
Bryant
8
Canada
8
Jura
8
Urquhart
8
Antarctic Peninsula
6
Arctic
6
Kristensen
6
Ramsay
6
Cavalier
4
Indian
4
Karpov
4
Kerguelen
4
Margarita
4
Morrow
4
New Siberian Islands
4
Popova
4
Bergen
2
Bjørklund
2
British Columbia
2
Camp Bell
2
Craddock
2
Cupola
2
Fourcade
2
Izvestija
2
Kennett
2
Kusunoki
2
Langseth
2
Lankester
2
Lister
2
Medusa
2
Morley
2
Nagata
2
Norwegian Sea
2
Perez
2
Pyramid
2
Queen Charlotte
2
Saunders
2
Scripps
2
more ...