Estimated Population:
- North Pacific population - 26,000
- Atlantic population - extinct
- Western pacific population - threatened
Ways to identify this species:
Gray skin with numerous light patches, head appears triangular from above, no dorsal fin
Biology
- This
coastal species undertakes the longest migration of any whale,
traveling more than 4,000 miles from summer feeding grounds in the
Arctic to spend the winter in the warmer waters of the Pacific Coast
and Mexico.
- Grey whales are mainly bottom feeders that eat
invertebrates and crustaceans from the mud and sand using their baleen.
During migration or breeding, they usually do not eat, instead
consuming enormous amounts of food during the summer.
Threats
- Western
North Pacific population was largely destroyed by commercial whaling
and its estimated today to be 100 whales. The North Atlantic population
was completely eliminated by whaling.
- Collisions with
marine vessels cause injury and death as does entanglement in fishing
gear. Pollution, coastal development, climate change and whale watching
disturbances may also play a role in strandings (on beaches) which
numbered 355 in 2000.