An introduction to the show, narrated by series presenter Sir David Attenborough, and set to an exclusive track developed by Hans Zimmer and Radiohead featuring an array of some of the most awe-inspiring shots and highlights from the series, as well as several exclusive scenes.

Oceans are explored to better understand the world beneath the waves.

A groundbreaking journey to the deepest parts of the oceans.

The ingenious ways life exists in the undersea cities of tropical reefs.

Animals go to the extreme to survive in the vast marine desert.

Animals fight for space and food in a seasonal world of boom and bust.

Coasts are the most changeable, but they offer great riches.

Scientists reveal what the future holds for our oceans.

This extended special journeys from the equator to the unexplored depths, meeting the best-loved characters from the series.