Gray Whales and Their Long Migration
In Gray Whales and Their Long Migration, narrator Sir David Attenborough describes the gray whale’s long migration from Mexico to Alaska where they feed on krill. Whale cows must wait until their young are strong enough to make the journey. This video is excerpted from BBC’s Blue Planet, a definitive documentary series diving into the mysterious depths of the sea to discover the natural history of the world’s oceans and the rarely seen marine life that reside there.
Lesson Express
Q: How long is the gray whales' migration trip?
A: The gray whales travel up to 12,000 miles from Mexico up to the Arctic Ocean.
Q: How is the gray whale cow’s trip different from the other whales?
A: The cow has to wait until her calves are strong enough to make the trip.
Q: What do the gray whales eat when they arrive?
A: The whales eat the krill that has gathered there to partake in the phytoplankton bloom.
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