In this final episode, we're looking to the future. The Oceans Treaty which was finally passed last year after decades... more

Everyone knows the oceans are changing. Sea levels are rising, the water's heating up, coral is bleaching. But away from... more

Hannah's been getting updates from onboard the Arctic Sunrise, one of Greenpeace's research ships, since the beginning of the series... more

Hollywood has a lot to answer for when it comes to how we view sharks. The Great White, we all... more

3 billion people rely on the oceans for their livelihoods. But who are they? What are their stories? Hannah's moving... more

They're like aliens from another planet. There are over 300 species and counting, from the size of your fingernail to... more

Did you know that pretty much anything goes in international waters? Past a certain point somewhere beyond the coast, national... more

The world's longest mountain range is actually in the middle of the ocean - the mid-Atlantic ridge, at more than... more

Antarctica is one of the harshest environments you can imagine. Winds can reach 200mph and the lowest temperature ever recorded... more

Hannah's asking all the questions you ever wanted to know about whales. Did you know they have culture? She's joined... more