Geographic location
Arctic
21
Wittenberg
Antarctic
20
Queensland
19
Tromsø
18
White Sea
18
Barents Sea
17
Canada
17
Norwegian Sea
17
Argentino
16
New Zealand
14
Tuva
14
Norway
13
Sør-Varanger
13
Baja
12
Helgoland
11
Alte
10
Ben Nevis
10
Black Rock
10
Brigham
9
Canol
9
Ifo
9
Indian
9
Murmansk
9
Niemelä
9
Arctic Ocean
8
Kara Sea
8
Pacific
8
Alta
7
Argentina
7
Kandalaksha
7
Tysnes
7
Burrows
6
Okhotsk
6
Svalbard
6
Usinsk
6
Yur
6
Chapel Hill
5
Laptev Sea
5
Novaya Zemlya Trough
5
Petushki
5
Spence
5
Avacha
4
Bering Sea
4
Chechen
4
Kama
4
Kostroma
4
Lizard Island
4
Liège
4
Referencia
4
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