Grey whale (Eschrichtius robustus)

Grey whales are split into two separate populations, the eastern North Pacific (American) and the critically endangered western North Pacific (Asian) population. Belonging to the baleen whale group, they have plates for filtering marine worms and crustaceans from the ocean floor. Grey whales undertake the longest annual migration of any known mammal, along the coastlines between their summer feeding and winter breeding grounds. They are the only species in their genus, which in turn, is the only genus in the family.

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About the Grey whale

The gray (or grey) whale (Eschrichtius robustus) is a baleen whale that travels between feeding and breeding grounds yearly. It reaches a length of about 16 meters (52 ft), a weight of 36 tons and an age of 50–60 years. Gray whales were once called devil fish because of their fighting behavior when hunted. The gray whale is the sole species in the genus Eschrichtius, which in turn is the sole genus in the family Eschrichtiidae. This mammal is descended from the filter-feeding whales that developed at the beginning of the Oligocene, over 30 million years before the present.

The gray whale is distributed in an eastern North Pacific (American) population and a critically endangered western North Pacific (Asian) population. Eastern and western populations in the North Atlantic became extinct in the 18th century.

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Scientific Classification

Kingdom: Animal (animalia)

Phylum: Chordate (Chordata)

Class: Mammal (Mammalia)

Order: Cetacea

Family: Eschrichtiidae

Genus: Eschrichtius

Species: Gray Whale (robustus)

Common Names

  • Devil fish
  • Gray back
  • Gray whale
  • Hard head
  • Mussel digger
  • Rip sack

Where can I see them?

They can be found in the following habitats:

Conservation Status

The Grey whale is Least Concern (IUCN 3.1)

  1. EX - Extinct
  2. EW
  3. CR - Threatened
  4. EN - Threatened
  5. VU - Threatened
  6. NT
  7. LC - Least concern

Population trend: Stable

Year assessed: 2008

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