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Barney's Barrier Reef

Episode 19: Coral Careers

Duration: 30 minutes

on BBC Two Wales

Barney Harwood and Gemma Hunt find that coral reefs work like a human city. Everyone has a job to do - from public transport to cleaning, building and waste disposal. Show more

BBC Two Wales

About BBC Two

BBC Two is a lively channel of depth and substance, carrying a range of knowledge-building programming complemented by great drama, comedy and arts.