Wildlife adventurer Nigel Marven embarks on a journey spanning over 5000 miles, tracing the gray whales as they undertake their epic migration up the Pacific coast of North America. These marine giants journey from the warm winter birthing lagoons of Baja California, Mexico, to the frigid seas of the Alaskan Arctic, navigating past breathtaking scenery and facing numerous challenges. Along the way, Nigel encounters fellow whale enthusiasts, scientists, and a diverse range of wildlife, both on land and in the ocean, making for an extraordinary adventure filled with amazing creatures and stunning landscapes.

Wildlife adventurer Nigel Marven embarks on a journey spanning over 5000 miles, tracing the gray whales as they undertake their epic migration up the Pacific coast of North America. These marine giants journey from the warm winter birthing lagoons of Baja California, Mexico, to the frigid seas of the Alaskan Arctic, navigating past breathtaking scenery and facing numerous challenges. Along the way, Nigel encounters fellow whale enthusiasts, scientists, and a diverse range of wildlife, both on land and in the ocean, making for an extraordinary adventure filled with amazing creatures and stunning landscapes.