Galápagos
Hannah's been getting updates from onboard the Arctic Sunrise, one of Greenpeace's research ships, since the beginning of the series - from Panama where it set sail out into the Galápagos Islands mari...
29 Apr 202433min
Sharks
Hollywood has a lot to answer for when it comes to how we view sharks. The Great White, we all know. But sharks have been around since before the dinosaurs, and in that time they've evolved into 538 d...
15 Apr 202440min
People Of The Sea
3 billion people rely on the oceans for their livelihoods. But who are they? What are their stories? Hannah's moving away from the ocean's wild animals and meeting its humans instead. She's joined by ...
8 Apr 202438min
Octopuses
They're like aliens from another planet. There are over 300 species and counting, from the size of your fingernail to 10 metres across. They live on the ocean's surface, and in its darkest depths. But...
1 Apr 202438min
Wild West Of The High Seas
Did you know that pretty much anything goes in international waters? Past a certain point somewhere beyond the coast, national jurisdiction ends and the Wild West begins. There's no police force for t...
25 Mars 202441min
Mountains Under The Waves
The world's longest mountain range is actually in the middle of the ocean - the mid-Atlantic ridge, at more than 40,000 miles long. But who knows about these mountains? How high are they? Where are th...
18 Mars 202438min
Antarctica
Antarctica is one of the harshest environments you can imagine. Winds can reach 200mph and the lowest temperature ever recorded was -89 degrees Celsius. But the monochrome above the waves is matched b...
11 Mars 202437min
Whales
Hannah's asking all the questions you ever wanted to know about whales. Did you know they have culture? She's joined by whale legend Hal Whitehead, whose close encounters with sperm whales and underst...
4 Mars 202443min
