The budding film-makers have a new set of skills to learn as they go underwater for the first time off the island of Zanzibar, as the contest to win a job with the BBC continues. Show more
Britain's Secret Seas
Episode 2: The Wild North
59 minutes
First broadcast: on BBC Two ScotlandLatest broadcast: on BBC Two Wales HD
Documentary exploring the seas around Great Britain. The team travel to Bass Rock, one of the world's largest gannet colonies, to track its trend-bucking success. Show more
Britain's Secret Seas
Episode 3: The Power of the East
59 minutes
First broadcast: on BBC HDLatest broadcast: on BBC Two Northern Ireland HD
Documentary series exploring the seas surrounding Great Britain. The team sets out to investigate the waters off the eastern coastline of Britain. Show more
Britain's Secret Seas
Episode 4: The Bustling South
1 hour
First broadcast: on BBC HDLatest broadcast: on BBC Two Northern Ireland HD
Documentary series exploring the seas surrounding Great Britain. The team explores our busy southern seas, which are littered with wrecks. Show more
Britain's Secret Seas
Episode 1: Giants of the West
59 minutes
First broadcast: on BBC Two Northern IrelandLatest broadcast: on BBC Two Northern Ireland
Documentary series exploring the seas surrounding Great Britain. The team looks at Britain's largest fish, the basking shark, and giant spiny spider crabs. Show more
The team discovers how a unique ocean paradise off the coast of California, home to the greatest variety of whales and dolphins in the world, is under threat. Show more
Series exploring the secrets of our underwater world. The team see how parts of the Southern Ocean are warming twice as fast as the world's other oceans and look at its impact. Show more
The team makes a dangerous dive into a 'black hole' in the Atlantic Ocean to discover how different earth's earliest oceans were 3.5 billion years ago. Show more
In the first of two episodes in the rich tropical waters of the Indian Ocean, the team explores its remote and pristine underwater worlds and go in search of the elusive dugong. Show more
The team explores the coastal waters of the Indian Ocean to discover what happens when this powerful ocean collides with the edge of a continent. Show more
The team explores the remote and unexplored Southern Red Sea, teeming with marine life and home to some of the warmest waters on the planet. They investigate its vibrant coral. Show more
Documentary. The team dives into one of the world's most hostile environments, beneath the polar ice cap, to explore how the ice is shrinking and how this may affect the climate. Show more
An exploration of the profound effect that humankind is having on the Mediterranean Sea. The team dives the remains of a Roman shipwreck and hunt for sharks. Show more