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*WHALES
5
BEAUFORT SEA
4
BERING SEA
4
Biological Oceanography
4
CHUKCHI SEA
4
POPULATION
4
SURVEYS
4
ACOUSTIC RECORDING SYSTEMS
3
AERIAL RECONNAISSANCE
3
ALASKA
3
BEHAVIOR
3
COASTAL REGIONS
3
DENSITY
3
ENDANGERED SPECIES
3
*ENDANGERED SPECIES
2
ANIMAL MIGRATION
2
AUTUMN
2
DISTRIBUTION
2
GEOGRAPHIC DISTRIBUTION
2
MIGRATION
2
SOUND
2
*ANIMAL MIGRATION
1
*BEAUFORT SEA
1
*BERING SEA
1
*Balaena mysticetus
1
*CHUKCHI SEA
1
*SURVEYS
1
AERIAL PHOTOGRAPHY
1
AIRBORNE
1
AQUATIC ANIMALS
1
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