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The summer plankton bloom in the north-east Pacific draws in animals in great numbers, from the billion-strong shoals of herring to migratory humpback whales.
First Air Date : Feb 11, 2009
Last Air date : Mar 18, 2009
Episode : 6 Episode
Season : 1 Season
Runtime: 26:14 minutes
Studio: BBC One
Country: United Kingdom, United States of America
Cast: David Attenborough