NATIONAL GEOGRAPHIC: GREAT MIGRATIONS (BLU-RAY)

This ground-breaking, seven-hour, high-definition event chronicling the inspirational, often harrowing journeys, the unforgiving odds and what it means to move like your life depends on it. Wildebeests, zebras, red crabs, elephants, kob, walruses, butterflies, jellyfish and sharks are all the focus of crews that travelled some 670,000 kilometres to every continent, filming hundreds of stories in over 20 countries.