Gray whales have the longest migration of any mammal, traveling 6,000 miles to and from Baja California where guests aboard voyages with National Geographic-Lindblad Expeditions will encounter them in their birthing lagoons on the outer coast. In these protected waters, mother whales fortify their young and prepare them for the lengthy journey back to the Arctic. In this episode of Expedition Spotlight, naturalist Marylou Blakeslee shares more about these special cetaceans and the unique privilege of spending time in their realm.