Blue Planet II

From warm, tropical waters to frigid seas at the poles, oceans across the planet are explored to better understand the world beneath the waves.

Antarctica is the coldest, harshest and most remote continent on Earth, yet an unimaginable abundance of life can be found in the pitch-black darkness of the seabed.

Crazy, colorful, vibrant. The reefs are like a mad metropolis, and survival in these undersea cities is a challenge with many different solutions.

The big blue is the world's greatest wilderness, far from shore and many kilometers deep. It's a vast marine desert where there is little to eat and nowhere to hide. Yet it's home to some of the biggest and most spectacular creatures on earth. This episode reveals what it takes to survive in this savage and forbidding world.

The planet's green seas are an enchanted world, home to magical sea creatures. From towering forests to great plains of seagrass, animals fight for space and food in a seasonal world of boom and bust.

Coasts are the most changeable of the ocean worlds, but they offer great riches. To survive on this frontline between two very different worlds requires endurance and ingenuity.

The ocean is changing fast, but is it too late to save it? Dedicated scientists from around the world share their latest discoveries and reveal what the future holds for our oceans.

A fascinating special revealing the stories behind Blue Planet II's most memorable moments. Discover what went into creating this stunning natural history series, as we show you the lengths the crews went to and the groundbreaking filming technology they used to capture incredible footage.