Aired: Feb 11, 2009The sudden thaw of the Arctic ice sheet marks the beginning of spring, uncove...

Next episode, marine life converges on South Africa's coast as the annual sardine run attracts a diverse array of species, starting with dolphins that discover the bounty of sardines and draw in gannets, seals, sharks, and whales to a spectacular feeding spectacle.
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Network: BBC One
Production Countries: United Kingdom, United States
Genres:Family, Documentary