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Wonders of the Great Barrier Reef with Iolo Williams

Duration: 58 minutes

on BBC Four HD

Documentary. Iolo Williams travels over a thousand miles with a specialist dive team looking for signs of hope the Great Barrier Reef can survive the threat of global warming. Show more

BBC Four HD

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.