Ocean , David Attenborough

David Attenborough explores British woodland, grassland, freshwater and ocean habitats, revealing the surprising and dramatic wildlife that exist right on the doorstep, the existence of which is critical for the survival of species right across the globe.

A remarkable chance discovery is about to reveal secrets that have laid hidden for 200 million years. A "dragon" that ruled the ocean at the time of the dinosaurs was found in the eroding cliffs on the southeast coast of England called the Jurassic Coast. It's an Ichthyosaur, a fish lizard. This fearsome predator had the very best characteristics of reptiles and mammals in one formidable package. It could regulate its own body temperature, had astonishingly acute eyesight, an impressive set of blade-like teeth, and powerful, gripping jaws to hunt and swallow its prey whole.

David Attenborough looks into the ocean's depths to discuss the coelacanth, a primeval fish hidden for 400 million years. Its mysterious movements reveal vital clues about life's journey from sea to land, as well as secrets of evolution and survival.

In a huge submarine canyon in California's Monterey Bay, there is an illuminating twilight zone. It is a world of countless exotic creatures, including sparkling jellyfish and deep sea fish that give off flashes. Using an ultra-high sensitivity 4K camera specifically developed for deep sea filming, together with experts in the field, Lights in the Abyss captures bioluminescent creatures in their natural habitat, deep in the Pacific Ocean. Narrated by Sir David Attenborough.

David Attenborough looks into the ocean's depths to discuss the coelacanth, a primeval fish hidden for 400 million years.

Footage of marine life in different environments around the north, beginning with a tropical coral reef which has medicinal properties for dolphins, and is used as a tool by tusk fish. In Japan, a shipwreck is home to the Asian sheepshead wrasse, which can change gender, while in the polar north, walruses struggle to find ice floes for their pups to rest on as climate change takes its toll on the environment. Narrated by David Attenborough

Exploring an unknown world 10,000 m beneath the waves. After capturing a giant squid on film, NHK's deep-sea film crew explores our planet's deepest point The Mariana Trench is nearly 7 miles deep. The water pressure is immense, and it's a world that's long been out of our reach. What creatures could survive such hostile conditions? This is an expedition to explore the earth's deepest frontier.
Narrated By David Attenborough.