Geographic location
Pacific
Indian
29
Arctic
15
Greenland
8
Southern Ocean
7
Antarctic
5
Arctic Ocean
5
EspaƱola
4
The Antarctic
4
Barents Sea
3
Bering Strait
3
Langmuir
3
Vostok Station
3
Zapiola
3
Las Palmas
2
Mid-Atlantic Ridge
2
Nipa
2
Amundsen Sea
1
Baja
1
Chukchi Shelf
1
Doble
1
Invierno
1
Kara Sea
1
Kya
1
Leech
1
Mull
1
Nordeste
1
Orleans
1
Queensland
1
Sever
1
Tilting
1
Trinidad
1
West Antarctica
1