Photos of Great Migrations series on National Geographic Channel
At up to 40 feet long and 20 tons, the largest fish in the sea lives entirely on the very tiniest of creatures.
Pacific walruses travel according to the movement of the ice. As the ice expands in the winter, they move south.
Each year, a small band of pronghorn follows the longest migration in the Americas below the Arctic.
The Falkland Islands are off the coast of South America in the South Atlantic Ocean.
The little red flying fox of Australia sometimes form camps of over one million individuals.
Award-winning photojournalist Tim Hetherington captures beauty, fear and pain in Korengal Valley, Afghanistan.
The team collects venom from some of the ocean’s deadliest creatures in order to create life saving antivenom.