Geographic location
Arctic
5
Helgoland
Pacific
Lopez
4
Ramos
4
Aitken
2
Arctic Ocean
2
Barents Sea
2
Beaufort Shelf
2
De la Costa
2
Diaz
2
Gaston
2
Indian
2
McKeown
2
Norway
2
Noto
2
O'Connor
2
Oliva
2
Patagonia
2
Perez
2
Tisnes
2
Ungava Bay
2
Andreeva
1
Annenkova
1
Bakken
1
Bayly
1
Blanchard
1
Cordero
1
Correa
1
Giard
1
Jennings
1
Jura
1
New Zealand
1
Queensland
1
Sanderson
1
Washburn
1