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Antarctic Ocean
97
Antarctica
Sea ice
42
Research vessels
34
Ships
26
Scientists
25
Biology--Field work
24
Ice-breaking vessels
22
Antarctic Peninsula
20
Snow
19
Palmer Station
18
Icebergs
15
Scuba divers
12
Sun--Rising and setting
11
Ctenophora
10
Lobate Ctenophore
9
Nuemeyer Channel
8
Deep diving
7
Underwater photography
7
Adelie penguin
5
Ecological stations
5
Pygoscelis adeliae
5
Ad??lie penguin
3
Drake Passage
3
Applied ecology
2
Glaciers
2
Ice--Antarctica
2
Kelps
2
Ocean bottom
2
Balaenoptera acutorostrata
1
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