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The Blue Planet

Episode 5: Seasonal Seas

Duration: 57 minutes

on BBC Four

Available for years

David Attenborough narrates a natural history of the oceans, exploring the richest waters on Earth, where the annual cycle of the sun drives an explosion of life. Show more

BBC Four

About BBC Four

BBC Four reflects arts, music and culture with an ambitious range of intellectually and culturally enriching programmes, taking an expert and in-depth approach to its subjects.