GRAY whales engage in the longest migration of any mammal in the world , swimming 6,000 miles from feeding grounds in the icy waters north of Alaska to warm breeding lagoons off Baja California , Mexico , and 6,000 back .
Baja California
Mexico
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Mexico
Baja California
/location/location/contains
Mexico
Baja California
/location/country/administrative_divisions
LOCATION
Alaska
LOCATION
Baja California
LOCATION
Mexico