Iolo: Deifio yn y Barrier Reef S01E02 - Pennod 2

Iolo Williams dives down to the remains of the SS Yongala, a shipwreck that has been transformed into an artificial reef. He also discovers how mangroves help to protect the reef and meets Beth Ross from Blaenau Ffestiniog who has settled in Cairns, and talks about the importance of the reef to the local tourist industry.