Barney's Barrier Reef - A to B

Barney Harwood and Gemma Hunt journey down under to discover the brilliantly beautiful and bizarre world of Australia's Barrier Reef and the weird and wonderful way it is all connected. But just how do these sensational sea creatures get from A to B? From walking sharks to hitchhiking shrimps and squids with jet propulsion, when it comes to journeying around, this ocean lot have ways of moving that are cool, wacky and downright jaw-droppingly awesome.