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EpisodeS1E650 min2009-03-18
Nature's Great Events
The Great Feast
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.
Nature's Great Events
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.