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The Blue Planet

Episode 7: Tidal Seas

Duration: 58 minutes

on BBC Three HD

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 Three HD

About BBC Three

The BBC’s multi-platform service for 16 to 34s, innovating with breakthrough comedy, stand-out entertainment, brave documentary and intellectual factual content.