Every year, gray whales make one of the longest migrations of any mammal. 🐋 In September, they leave their Arctic feeding grounds and begin their journey south. From December onward, they start arriving in the calm and sheltered lagoons of Baja, Mexico, where they mate, give birth, and care for their calves. When the season comes to an end, they begin the long journey north again, traveling up to 12,000 miles round trip. It’s an incredible cycle of life and love, and one of the most moving wild