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Knowledge, drama, comedy and the arts for a broad adult audience.

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Wild Isles

Factual: Science & Nature: Nature & Environment

David Attenborough reveals the spectacular and important British wildlife on our doorstep.

Extraordinary. Dramatic. Beautiful. Sir David Attenborough celebrates the wonders of British wildlife. It's our home, as you've never seen it before.

Series 1

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David Attenborough

Gisle Sverdrup

Andy Netley

Hilary Jeffkins

Alastair Fothergill

Silverback Films Ltd

Wild Isles: Series 1: Ocean

Ocean

BBC One - Wild Isles, Series 1, Ocean

David Attenborough explores our mysterious seas and reveals dramatic wildlife stories.

David Attenborough explores our seas, from the vibrant and surprising shallows to the abundant open ocean, and reveals some extraordinary and dramatic wildlife stories.

Sir David Attenborough explores the surprisingly vibrant seas that surround the British Isles. The vast watery wilderness around us is over three times the size of our land mass, and yet to many, our oceans remain a mystery. Full of colour and teeming with life, the seas of Britain and Ireland are crucially important to a range of wildlife. This episode goes beneath the waves to uncover the thriving habitats that exist along our 22,000-mile coastline.

In winter, clear evidence of the ocean’s abundance can be seen on a beach in Norfolk. Thousands of grey seals congregate on the shoreline to give birth. Britain and Ireland are home to 40 per cent of the world’s grey seals, and the number being born on our shore rises every year. Once the newly born pups are weaned, the females are ready to breed again, and heavyweight males enter violent, bloody fights to win a stretch of beach, and the females along with it. 

Beyond the beach, the vibrant shallows contain several important habitats. Rich beds of seagrass are nurseries for a range of animals, while also acting as very important carbon storage areas. They are also home to one of the strangest fish in our waters, the seahorse. We follow a male and female as they perform a balletic mating dance in the water, delicately entwining their tails. The stakes are high, as these animals mate for life.

In deeper water, patterned cuttlefish prowl the water on the hunt for food. When night falls, tiny algae floating in the water alert the cuttlefish to nearby prey. The bioluminescence allows the cuttlefish to snatch their victims, even in the dead of night.

Some animals, like the spider crab, undergo a mass migration along the shallow seabed. For just a few days every year, thousands of crabs march together, forming a huge mass of bodies. Others, like the slow-moving royal flush sea slug, have a more mesmerising way of migrating. They use the water currents to carry them to new and food-rich areas, using their bodies like wings to swim upwards and drift. 

At the most northerly point of the British Isles are the Shetland Islands. The undisturbed coastline here is a stronghold for more than a thousand otters. We follow a fearless young otter as it dives to the sea floor, turning up rocks in search of fish and crabs. They need to catch enough prey to keep warm in the frigid northern water. Thankfully, the pickings here are rich.

The Corryvreckan whirlpool off Scotland's west coast is the third-largest whirlpool on the planet. Clashing currents recycle nutrients up to the surface, and the waters become a rich soup of tiny floating algae that serve as food for a group of alien-looking animals called the zooplankton, which are in turn a crucial food for our largest fish, the basking shark. 

Herring and mackerel form huge swirling shoals as they too feed on plankton, and this attracts the attention of aerial hunters. Gannets dive at speeds of more than 60 miles an hour to snap up the fish. As they hit the surface, they fold their wings back to avoid them breaking on impact. 

In a touching piece to camera, Sir David bids a fledging Manx shearwater chick farewell as it embarks on a 6,000-mile journey across the oceans to South America. There is no better example of how important the British Isles and its abundant seas are to the survival of wildlife worldwide.

Wild Isles: Series 1

BBC One

David Attenborough reveals British wildlife as spectacular as anything found on the globe.

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