Geographic location
Antarctic
274
Pacific
272
Burton
175
New Zealand
146
Weddell
132
Weddell Sea
132
Arctic
127
Ridley
105
Indian
91
Canada
90
Austin
88
The Antarctic
77
Goodwin
74
Merrick
64
Alvarez
62
Greenland
50
Gulf of Alaska
46
Morrow
42
Diaz
40
Pulitzer
40
Southern Ocean
40
Barents Sea
38
Bering Sea
38
Kerguelen
38
British Columbia
36
Norway
36
Charcot
34
Queensland
32
South Georgia Island
32
Genova
30
Custodio
28
Fanning
28
Okhotsk
26
Ramirez
26
North Cape
22
Arctic Ocean
20
Drake Passage
20
Holdfast
20
Kara Sea
20
Lamarck
20
Sladen
20
Steen
20
Argentina
18
Bay of Plenty
18
McMurdo Sound
18
Patagonia
18
Percy
18
Ross Sea
17
Cartwright
16
Herdman
16
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