Only the Toughtest

S1, E1: East of Moscow is a sea of mystery and contrast where liquid fire and frozen waters coexist. Take a bracing plunge into the Sea of Okhotsk and discover how its creatures battle to stay alive, thanks to their ingenious adaptations. From the fearsome hunting styles of the orca to the unique thousand-year relationship between nomadic reindeer and indigenous Koryaks, this is a yearlong examination of a world where only the toughest survive.