Pardeep
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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)
A male wandering albatross displays its 11-foot wingspan to a female on South Georgia Island. The courtship ritual renews their pair bond after months of roaming the Southern Ocean. (© National Geographic/Frans Lanting)
Spawning salmon dominate traffic in the Ozernaya River on the Kamchatka Peninsula, Russia. (© National Geographic/Randy Olson)
Immense flocks of white pelicans funnel through the Mississippi Flyway every day during the birds' twice-yearly travels between wintering and breeding grounds. (© National Geographic/Annie Griffiths)
A sperm whale pod with a large calf migrates offshore of the Azores Islands in the eastern Atlantic. (© National Geographic/Hiroya Minakuchi/Minden Pictures)
Plains zebras typically accompany the wildebeest - danger lurks if the big equines become separated from the herd. (© National Geographic/Mitsuaki Iwago/ Minden Pictures)
An advancing white shark typically means doom for any large sea mammal it approaches, even for huge elephant seals off Guadalupe Island off Mexico's Pacific coast. (© National Geographic/Mauricio Handler)
Dusk silhouettes a pronghorn at the Heart Mountain National Antelope Refuge in Oregon. (© National Geographic/Michael Durham/Minden Pictures)
A proboscis monkey, her infant holding tightly, makes a flying leap in the Bornean forest. (© National Geographic/Tim Laman)