The northern bottlenose whale is endemic to the North Atlantic Ocean .
Populations are found in the deep ( > 500 m ) cold subarctic waters of the Davis Strait , the Labrador Sea , the Greenland Sea and the Barents Sea .
The northern bottlenose whale is endemic to the North Atlantic Ocean and populations are found in the deep ( > 500 m ) cold subarctic waters of the Davis Strait , the Labrador Sea , the Greenland Sea and the Barents Sea .