National Geographic Ultimate Explorer guest correspondent Adam Ravetch has spent his career pursuing one of the high Arctic's massive and misunderstood animals—the walrus. This week, footage that the award-winning cinematographer obtained while scuba diving in Arctic waters appears in Battle of the Arctic Giants.
The film reveals the drama of walruses and polar bears meeting face-to-face, and shares what's likely the first underwater footage of a mother walrus nursing and protecting a newborn calf.
