The Mystery of the Med Rings

Deep Blue is a major documentary feature film shot by the BBC Natural History Unit. An epic cinematic rollercoaster ride for all ages, Deep Blue uses amazing footage to tell us the story of our oceans and the life they support.

Peter Snow presents highlights from today's three deep-sea dives around the world. In 2002 BBC organized three concurrent dives , first in Monterey Bay where unmanned submersible is lowered into underwater canyon which is over mile deep. Second dive is in Grand Cayman where submersible Atlantis will explore life at the spectacular Cayman Wall , Kate Humble reports . During the dive, the crew used bait to attract a deep-water giant, the six-gill shark. Third dive takes place in middle of the Atlantic 1200 miles west of Portugal, which is also deepest of the three dives, divers will descent in Russian submersible Mir from research vessel Keldish and the Mir will dive in the bottom of the ocean in 2300 metres .

A short distance from Marseille, at Cape Morgiou, in the depths of the Calanques massif, lies the Cosquer cave, discovered only about thirty years ago by a diver, Henri Cosquer. With its bestiary of hundreds of paintings and engravings - horses, bison, jellyfish, penguins - the only underwater decorated cave in the world allows us to learn a little more about Mediterranean societies 30,000 years ago. Today, threatened by rising water levels accelerated by global warming, this jewel of the Upper Paleolithic is in danger of being swallowed up. To save the cave from disappearing, the Ministry of Culture has chosen to digitize it. From this virtual duplicate, a replica has been made on the surface to offer the public a reconstruction that allows them to admire these masterpieces.

Charlie, Wendy and Holly are joined by Regis, Jocelyne and Armelle investigate the naturist opportunities on Corsica. They visit the lovely seaside resorts of Bagheera and Villata with their splendid beaches and numerous facilities, before heading to the mountainous resort of U Furu where waterfalls and sparkling pools provide enchanting delight.

For eight centuries, between the 9th and 1st century BC, the Etruscans, inhabitants of the Italian peninsula, were one of the most powerful peoples of the Mediterranean basin, and when they disappeared they left behind impressive necropolises, vestiges of sanctuaries and even entire cities. How did they attain such power? How far did they extend their dominion and influence? What were the causes of their decline?

In April 2015, two shipwrecks in the central Mediterranean resulted in over a thousand deaths. The first, on 12 April, occurred when an overcrowded boat was approached by a large commercial vessel. Less than a week later, on 18 April 2015, a similar incident led to over eight hundred deaths after an overcrowded vessel collided with a cargo ship that had approached to rescue its passengers. Both incidents are in part the result of changing EU policies toward at-sea rescue, particularly the retreat of state rescue operations and a resulting onus on commercial vessels to fill the ‘rescue gap’.

Tom Daley came to national and international prominence when he won the Men's 10 metre platform diving European championship in 2008, at the age of 13, and came 7th in the individual competition and 8th in the synchro competition at the Beijing Olympics. In the summer of 2009, aged 15, he won the World Championships, and this documentary followed him through the 2010 diving season.

Director Guy Hamilton and several of the stars of Agatha Christie's "Evil Under The Sun" walk you through the making of the film.

Created in the Victorian era to widen the mouth of the River Tees for shipping, South Gare is a man-made peninsula extending four kilometres into the cold North Sea. Today, the industry it was built for has gone, but the Gare remains as a haven for all sorts of unexpected communities - kite-surfers, photographers, bird-watchers, scuba-divers and the people who simply appreciate its strange, lonely beauty.

The NHK team that captured the world's first footage of a live giant squid in its natural habitat is setting out for another deep-sea adventure. They will give us a look at the amazing life forms with luminous bodies that have survived the harsh, pitch-dark deep-sea environment of the Pacific.

Using real cases, this documentary demonstrates the extent to which violent criminals can use social media to locate and manipulate victims.

Coral reefs are the nursery for all life in the oceans, a remarkable ecosystem that sustains us. Yet with carbon emissions warming the seas, a phenomenon called “coral bleaching”—a sign of mass coral death—has been accelerating around the world, and the public has no idea of the scale or implication of the catastrophe silently raging underwater.

From the banks of the Bahamas to the seas of Argentina, we go underwater to meet dolphins. Two scientists who study dolphin communication and behaviour lead us on encounters in the wild. Featuring the music of Sting. Nominated for an Academy Award®, Best Documentary, Short Subject, 2000.

Groundbreaking documentary which follows a Japanese-led team of scientists as they attempt to shed light on the mysterious world of deep sea sharks. Only 50 specimens of the newly discovered 'megamouth' have ever been sighted. Over four years, scientists and film crews voyaged in midget submarines into the depths of Suruga Bay and Sagami Bay to film them. Prehistoric 'living fossil' sharks such as bluntnose sixgill sharks, goblin sharks and frilled sharks also lurk in the depths. As part of the investigation, a sperm whale carcass was placed at the bottom of the sea to attract these sharks, which were then studied and observed from the submersible vessels. Revealing in detail the previously unknown behaviour of deep sea sharks, the film unravels another of the intriguing mysteries of our planet's biodiversity.