The Mystery of the Med Rings

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 .

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?

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.

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.

James Cameron teams up with NASA scientists to explore the Mid-Ocean Ridge, a submerged chain of mountains that band the Earth and are home to some of the planet's most unique life forms.

With a team of the world's foremost historic and marine experts as well as friend Bill Paxton, James Cameron embarks on an unscripted adventure back to the wreck of the Titanic where nearly 1,500 souls lost their lives almost a century ago.

A thrilling comedic documentary attempting to uncover the mystery of who is responsible for one of the most infamous bloopers in cinematic history.

A horrific triple child murder leads to an indictment and trial of three nonconformist boys based on questionable evidence.

As well as providing the subject for Luc Besson’s The Big Blue, Jacques Mayol did more than anyone to establish the sport of free diving to enormous depths without an oxygen supply. Using breathing techniques derived from yoga, he went to 50, 60, and even 100 meters—depths no one had considered to be within the bounds of human possibility. Mayol was a sportsman, a mystic, a vagabond, but above all, a man who believed in testing the limits of experience. This visually stunning tribute shows a man’s quest to be at one with the vastness of the ocean and to have no fear of the abyss within, where lurks serenity, freedom and finally, death.

On the shores of Jeju Island, a fierce group of South Korean divers fight to save their vanishing culture from looming threats.

Examining one of the most baffling unexplained deaths of recent years. In August 2010, Gareth Williams, a GCHQ employee on a 3-year secondment to MI6, was found dead inside a padlocked duffle bag in the bath of his London flat.

Coral Reef Adventure follows the real-life expedition of ocean explorers and underwater filmmakers Howard and Michele Hall. Using large-format cameras, the Halls guide us to the islands and sun-drenched waters of the South Pacific to document the health and beauty of coral reefs. Featuring songs written and recorded by Crosby, Stills & Nash.

The Living Sea celebrates the beauty and power of the ocean as it explores our relationship with this complex and fragile environment. Using beautiful images of unspoiled healthy waters, The Living Sea offers hope for recovery engendered by productive scientific efforts. Oceanographers studying humpback whales, jellyfish, and deep-sea life show us that the more we understand the ocean and its inhabitants, the more we will know how to protect them. The film also highlights the Central Pacific islands of Palau, one of the most spectacular underwater habitats in the world, to show the beauty and potential of a healthy ocean.

Peter Gimbel and a team of photographers set out on an expedition to find and film, for the very first time, Carcharodon carcharias—the Great White Shark. The expedition lasted over nine months and took the team from Durban, South Africa, across the Indian Ocean, and finally to southern Australia.

Described as being a film about determination, danger and the ocean’s greatest depths, James Cameron's "Deepsea Challenge 3D" tells the story of Cameron’s journey to fulfill his boyhood dream of becoming an explorer. The movie offers a unique insight into Cameron's world as he makes that dream reality – and makes history – by becoming the first person to travel solo to the deepest point on the planet.

For more than 10 years, world champion freedivers Pipin Ferreras and Umberto Pelizzari have been vying for world records. Their love of the sea without compromise is what unites these two rivals. However, it is their different personalities and opposing diving philosophies that separate them. Pipin is the "No Limits" man who wants to go deeper and deeper. Umberto, the purist, seeks harmony in the ocean's depth. Ocean Men takes you into the world of these two awe-inspiring freedivers through the use of breathtaking underwater photography, enchanting music, and insightful animation.

Join renowned explorer Jacques-Yves Cousteau as he investigates aquatic habitats worldwide, showcasing whales, sharks, and diverse marine life. The film highlights the brutal realities of nature while capturing the wonder of underwater exploration, as the team ventures into previously unseen ocean depths.

Whether it's the biggest great white, the most photographed tiger shark, or the shark known for jumping 100 feet up out of the water, we're diving into the stories of the greatest shark stars of all time.

Bonded by their love of freediving, a record-setting champion and a heroic safety diver try to make history with a remarkable feat, ready to risk it all.

Everyone has a skeleton or two in his or her closet, but what about the director behind some of the most successful thrillers ever to hit the silver screen? Could M. Night Shyamalan be hiding a deep, dark secret that drives his macabre cinematic vision? Now viewers will be able to find out firsthand what fuels The Sixth Sense director's seemingly supernatural creativity as filmmakers interview Shyamalan as well as the cast and crew members who have worked most closely with him over the years. Discover the early events that shaped the mind of a future master of suspense in a documentary that is as fascinating as it is revealing.