Programme Index

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The Blue Planet

Episode 7: Tidal Seas

Duration: 58 minutes

on BBC Four

Available for years

David Attenborough narrates a natural history of the oceans. As snails surf the waves in pursuit of a meal, how do the tides create opportunities for marine 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.