Follows a Swallow on its first migration from Southern England, across the Sahara to South Africa - a journey of 6,000 miles which only 1 in 5 birds survive.
Follows the 11,000 mile migration of a Grey Whale from a tropical Mexican lagoon to the Arctic Chukchi Sea.
Follows a relay of 3 generations of Monarch Butterfly on their 3000 mile migration across the North American continent from Mexico to Canada.
Follows the migration of a new-born Caribou calf, looking at how & why the 6000 mile trek from calving grounds to the winter range is undertaken.
Follows the 2,000 mile journey of an Eel from its birthplace in the Pacific Ocean to the rivers & lakes of Eastern Australia.
Follows a Western Diamond-backed Rattlesnake across the Sonoran Desert to its Winter hibernation cave as it uses heat imagery to negotiate rough terrain.