Ocean Souls

Fallen whale carcasses, abundant in the deep-sea, form ecosystems of their own. As it decomposes, different stages support a succession of marine biological communities. It is these complex and fascinating stages that are here explored.

In 1973 Alister Barry joined the crew of a protest boat (The Fri) to Mururoa Atoll, where the French Government were testing nuclear weapons. Barry records the assembly of the crew, the long journey from Northland, and their reception in the test zone; when The Fri was boarded and impounded by French military he had to hide his camera in a barrel of oranges.

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 .

Pacific Mother journeys from Japan, to Hawaii, Tahiti, Rarotonga and Aotearoa to share interwoven stories of formidable women who live at one with the Pacific Ocean – freediving, spearfishing and paddling waka through its depths and playing with their children in its shallows – a stark contrast to fast-paced lifestyles of larger towns or cities. These women are all mothers who experienced diverse births in hospital, at home and by the sea, with and without medical assistance. Fukumoto also meets Māori and Japanese midwives who share indigenous traditions and rituals around birth that have been lost over recent generations, and are now gradually being reclaimed. Their stories demonstrate just how disconnected the global default maternity system is from the instinctive and cultural needs of mothers and families. They inspire a call to action on birthing rights, as well as a call for parents’ reconnection with their role as nurturers and protectors of their natural environment.

The documentary follows a group of Latin American environmentalists and scientists on their risky expedition through the second largest coral reef in the world.

Blue Whales: Return of the Giants 3D takes viewers on a journey of a lifetime to explore the world of the magnificent blue whale, a species rebounding from the brink of extinction. Following two scientific expeditions—one to find a missing population of blues off the exotic Seychelles Islands, the other to chronicle whale families in Mexico’s stunning Gulf of California—the film is an inspirational story that transforms our understanding of the largest animal ever to have lived.

Filmed over the course of two decades, this beautiful portrait of North America's Pacific Coast will show off its abundance of marine life. But it wasn't always so. The richly illustrated action sequences of whales, seals, dolphins, sharks, sea otters and seabirds combine to make this an unforgettable and inspirational story.

There is a mystery there and the answer lies somewhere between Bermuda, Puerto Rico and Miami. Hundreds of boats and planes have disappeared in the ocean with little or no trace at all. Most of these cases can be explained quite easily by human error or bad weather. But there are some that defy all explanation. Theories abound on these causes: Aliens, massive gas eruptions and freak waves. The documentary reveals that the boats and planes face a real danger in a triangle, but the true threat is often as strange as the wildest theory.

The fascinating world of ocean fauna: dangerous sharks, majestic stingrays, brilliantly coloured fish and a variety of species from the diver's paradise of the Maldives. Spectacular images of the diverse life-forms to be found under water.