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7 Episodes 2017 - 2017
Episode 1
Sat, Jan 20, 201851 mins
One Ocean takes us on a journey from the intense heat of the tropics to our planet's frozen poles to reveal new worlds and extraordinary never-before-seen animal behaviours.

Episode 2
Sat, Jan 27, 201854 mins
The adventurers in submarine explore the ocean and film everything around them.

Episode 3
Sat, Feb 3, 201851 mins
The broad-club cuttlefish has found its place by using a hypnotic display that apparently mesmerizes its prey, causing it to let down its defenses. On the Great Barrier Reef a remarkable grouper uses sign language, dubbed the headstand signal, to reach out to an entirely different creature, a reef octopus, to flush small fish out of their hiding holes and into the groupers waiting mouth.

Episode 4
52 mins
Half of the oceans are just vast open sea, stretching seemingly endlessly till the nearest land or island, rarely providing nourishment or shelter. It's roamed by good, nearly tireless swimmers. Yet many swim in large schools, to make best use of rare feeding opportunities - thus when a school of small fish surges from the deep sea, dolphins, mackerels and sword fish race to corner and devour the prey. Whale calves must wait hours while mothers dive to he deep sea bed. Unlike mostly rapid predators, may prey species float, which currents may carry anywhere over years, but like jellyfish reproduce massively reaching rich waters.

Episode 5
53 mins
It's our green seas, not the blue, that bring life to our oceans. Here sunlight powers the growth of enchanted forests of kelp, mangroves and prairies of sea grass. They are the most abundant but fiercely competitive places in the ocean to live.

Episode 6
50 mins
A fascinating insight into the coastal depths that grace our planet.

Episode 7
53 mins
The human impact on the seas was never greater, notably in environmental issues. Fishing quota are vital, a long term insurance, but lacking in half the fishing grounds. The greenhouse problem is already changing climate, affecting especially certain marine biotopes, polar zones but also coral reefs, which are especially vulnerable and vital. Dumping waste keeps increasing, with new worries about micro-plastics, fragmentarized artificial materials. yet there is hope due to growing awareness, initiatives and discoveries.
