Probably no other sea animal has captured our affection and attention like the dolphin. Its intelligence and athleticism has fascinated observers for years. Dolphins seem to exhibit a friendly willingness to co-operate with humans...something very rare in the wild animal kingdom.

Jellyfish blooms are making headlines around the world. This is due to the damage they cause to tourism, fishing and our health. How can these creatures, which are over 98% water and have no shell, skeleton or brain, expand so rapidly? Although this is a normal stage in the life cycle of these gelatinous animals, we have to admit that blooms have become much more frequent and massive in recent decades. We're even witnessing jellyfish populations appearing in more and more regions where fish have been replaced by them, such as off the coast of Namibia, in the Black Sea, in the Sea of Japan and in certain areas of the Baltic Sea. What causes this? Why has the role of jellyfish in the ocean been underestimated, even though they outlived the dinosaurs? Are jellyfish on their way to dominating the oceans as they once did? What if they were to be the only ones left?

Coral reefs are believed by many to have the highest biodiversity of any ecosystem on the planet. A lot of the life found here can seem very alien at first, they occupy less than 1 percent of the ocean floor but yet are home to more than 25 percent of all marine life. Warm water reefs typically come to mind when thinking of the Pacific Ocean and the Caribbean Sea, these reefs are very well known but they don’t just occur in warm waters. In this one hour special, we are brought into this alien environment and discover for ourselves a strange, hidden world that is simply abundant with life, ranging from the weird to the wonderful.

In the deep waters of Mexico's Gulf of California, large and ravenous predators are congregating and local fishermen fear them more than sharks.

The story of a little loggerhead turtle, as she follows in the path of her ancestors on one of the most extraordinary journeys in the natural world. Born on a beach in Florida, she rides the Gulf Stream up towards the Arctic and ultimately swims around the entire North Atlantic across to Africa and back to the beach where she was born. But the odds are stacked against her; just one in ten thousand turtles survive the journey.

In 1975, soon after the end of the Vietnam War, Hoa Thi Le and Hue Nguyen Che fled the country on a small boat. After nine days at sea, they docked in the Philippines, where they were utilized as background extras for “Apocalypse Now.”

Meet Duewand Collier Jr.-Male, 68 years old, American Citizen, a child conceived in the backdrop of the Philippines-American Mutual Defense Treaty, born and raised with Catholic guilt. He has made peace with his past and now tells his story-a story of love.

A biographical documentary about the Belgian free-diver Fred Buyle and his art of silent diving.

Join NOVA on a voyage beneath the waves, where you'll discover a bizarre, alien-like creature like no other. It's an animal with eight sucker-covered arms growing out of its head, three hearts pumping its blue-green blood, and a doughnut-shaped brain. It has the ability to change its color and shape to blend in with seaweed and rocks, and it has a knack for switching on electrifying light shows that dazzle its prey. Perhaps most surprising of all, this animal is quite intelligent, with a highly complex brain. In this program, underwater cameras capture the extraordinary powers of the cuttlefish.

Stories of personal connections with orcas, beautiful cinematography featuring B.C’s resident orcas, and an evocative soundscape composed by Jeff Rona and Ben MacDougall provide an uplifting contrast to the environmental challenges we face. Inspired by elders including environmentalist and CBC Broadcaster, David Suzuki, whale researchers Alexandra Morton and Paul Spong, totem carver Wayne Alfred, and lifelong resident of the Broughton archipelago Billy Proctor, this film is anchored by Rob Stewart’s invitation to rise up and create the world we dream for ourselves. Viewers will come to understand the importance of the personal choices we make; it becomes clear that what we do to nature, we do to ourselves.

THE LONELIEST WHALE is a cinematic quest to find the “52 Hertz Whale,” which scientists believe has spent its entire life in solitude calling out at a frequency that is different from any other whale. As the film embarks on this engrossing journey, audiences will explore what this whale’s lonely plight can teach us — not just about our changing relationship to the oceans, but to each other. Executive Produced with Leonardo DiCaprio and Adrian Grenier.

Supported by the National Geographic Society, the world's eminent blue whale scientists embark on a revolutionary mission: They'll find, identify, and tag California blue whales, use the DNA samples to confirm the sex of individual whales, then rejoin the massive creatures' stunning migration when they collect at a chimera known as the Costa Rica Dome.