Explore Our World

Season 1 Episode 855689

Migration for Reproduction

Aired Unknown Feb 25, 2009 on BBC
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Episode Summary

Migration for Reproduction
Follow the marathon travellers of the natural kingdom on their incredible journeys, unravelling some of the great mysteries of migration. Why do animals and even some plants undertake these odysseys and how do they accomplish the extraordinary navigational feats that are often involved? Follow snow geese, salmon and turtles on their urgent mission to breed and reproduce. Learn how snow geese make their way from the marshlands in New Mexico using a complex system of magnetic fields and sunlight in order to find their way North, with astonishing accuracy. Watch salmon face a wide range of predators, from grizzly bears to scavenging eels, which ensures only the strongest get to complete their journey. Next, the green turtle moves from the tropical reefs to join other turtles across the ocean to return to the breeding grounds of their birth.moreless

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