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Planet Earth: The Blue Planet (2007)
Airing | 3/15, 4:50p

S1 E5 | Seasonal Seas

1h 10m | Animals, Travel, Miniseries, Documentary, Nature
Watch Planet Earth: The Blue Planet online.
Plankton use sunlight as an energy source in temperate-sea habitats.
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Planet Earth: The Blue Planet
Season
1
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