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Gray whale migration map
October: Fall Migration Underway
As days grow shorter, northern waters begin to freeze, and the food supply dwindles. Gray whales know what to do. More...

Spyhopping gray whale

  Dr. Kate Wynn
  Gray whales make one of the longest migrations of any mammal on earth. Every year they swim over 10,000 miles roundtrip between Mexico's nursery lagoons and feeding grounds in the Arctic. The changing seasons drive the endless travels. Glimpse into the mysterious world of these gentle giants. What can gray whales teach us about survival?