David Attenborough explores the ocean, which covers 70 per cent of the Earth's surface. It contains creatures like the leafy sea dragon and the narwhal. Show more
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David Attenborough explores the ocean, which covers 70 per cent of the Earth's surface. It contains creatures like the leafy sea dragon and the narwhal. Show more
BBC One is a TV channel that started broadcasting on the 20th April 1964. It replaced BBC Television.
