The ocean's twilight zone is one of the most important marine areas you’ve most likely never heard of. Home to marine life yet to be discovered and integral to carbon sequestration, it is vital that we protect this layer of ocean that spans across the Earth. Environment Editor for The Times, Adam Vaughan is joined by ocean explorer, Luiz Rocha, to learn more about his pioneering diving expeditions in the depths of our oceans and how he is safeguarding this area for the future of our planet.

This is Planet Hope, a podcast from The Times in partnership with Rolex and its Perpetual Planet Initiative. 

Series producer: Anya Pearce

This podcast is advertiser funded.

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