Oceans

A guide to the sites visited by the Oceans team in the Atlantic Ocean. In this episode the team make a dangerous dive into a 'black hole' to discover how different our planet's earliest oceans were 3.5 billion years ago. They dive one of only two places on the planet where the oldest life form on earth still survives. Finally they then brave waters teeming with sharks to act as human bait.

A guide to the sites visited by the Oceans team in the Red Sea. The team dive in one of only two places on Earth you can see a new ocean being born and they uncover archaeological evidence of one of early man's first encounters with the sea. Also Philippe Cousteau Jr has an emotional journey to the remains of an ambitious underwater village.

A guide to the sites visited by the Oceans team in the Southern Ocean. The team go in search of one of the planet's most curious and enigmatic creatures. The team also explore the iconic kelp forests to investigate how they're being threatened by the rise in sea temperatures and a new predator. Finally they enter a maze of perilous sea caves to hunt for evidence of ancient sea creatures that can reveal how this ocean formed.

A guide to the sites visited by the Oceans team in the Sea of Cortez. The team explore how a unique ocean paradise is under threat. They dive stormy seas to investigate how a giant predator, the cannibalistic Humboldt squid, is invading this sea, and search for the threatened hammerhead shark. Then, in an extraordinary encounter, the team carry out pioneering science on one of the largest carnivores on earth.