In the concluding installment of our two-part season finale of Naked Oceans, we get a bit thoughtful and contemplate what might lie in store for the future of the oceans. Helen catches up with some of the marine experts we've heard from throughout the last two series and asks them about what they...

The history of life in the oceans spans over 3.5 billion years. In this Naked Oceans we'll take a whistlestop tour of that story...