In this final episode, we're looking to the future. The Oceans Treaty which was finally passed last year after decades of negotiations was momentous - but what actually is it? And will it do anything? Senior Policy Advisor Lisa Speer was at the UN HQ in New York when the announcement was made, and joins Hannah to break down what it means, why it's exciting - and what obstacles still stand in the way.

Hannah speaks with Hawaiian community leader Uncle Sol about his island's relationship to the ocean and what the Oceans Treaty means to him; and she also meets Marion Atieno Osieyio, creator and host of the award-winning Black Earth Podcast, for an inspiring chat about the future of conservation.

The podcast is over for now, but we're continuing the conversation on our social media channels. Come and join us @oceanspod on Instagram, TikTok and Twitter. And if this series has inspired you and you want to help in some way, go to https://act.gp/life-underwater.