Episode 1
One Ocean
Oceans are explored to better understand the world beneath the waves.
Episode 2
The Deep
A groundbreaking journey to the deepest parts of the oceans.
Episode 3
Coral Reefs
The ingenious ways life exists in the undersea cities of tropical reefs.
Episode 4
Big Blue
Animals go to the extreme to survive in the vast marine desert.
Episode 5
Green Seas
Animals fight for space and food in a seasonal world of boom and bust.
Episode 6
Coasts
Coasts are the most changeable, but they offer great riches.
Episode 7
Our Blue Planet
Scientists reveal what the future holds for our oceans.