Going to sea on the Antarctic Peninsula, Gentoo penguins line up and quickly dive in together. (© National Geographic/Paul Nicklen)
A wildebeest herd stampedes across the dusty plains of Maasai Mara National Reserve in Kenya. Every year, wildebeests travel some 1,800 miles across equatorial East Africa in a race toward rain and the green it engenders. (© National Geographic/Anup & Manuj Shah) #
To the walrus, ice is life. An oxygen-breathing marine mammal, it relies on the ice as a place to rest, to give birth, to nurse and to migrate. And with global warming, the ice is disappearing. Their annual migration is becoming a race against time and distance, depth and disaster. (© National Geographic/Paul Nicklen) #
A zebra calf stays close to its mother for months, recognizing her by voice, smell and pattern of stripes. (© National Geographic/Marc Moritsch) #
Golden jellyfish of Palau receive their namesake color from algae-like, single-celled organisms named zooxanthellae, which live within jellyfish and provide it with the energy required for life. They follow the sun in a daily migration that feeds their passengers and ensures their own survival. (© National Geographic/National Geographic Television) #
