Great Migrations is a seven-episode nature documentary television miniseries that airs on the National Geographic Channel, featuring the great migrations of animals across the globe. The seven-part show is the largest programming event in the ten-year history of the channel and is part of the largest cross-platform initiative since the founding of the National Geographic Society. It was filmed in HD, and premiered on November 7, 2010 with accompanying coverage in the National Geographic magazine and an official companion book.