Méditerranée : la face immergée des volcans

In French Polynesia, there is a place where every year, thousands of groupers gather in secret followed by hundreds of sharks… The photographer, diver and biologist Laurent Ballesta, with his team, wanted to better understand what motivates these fish to wait until the exact day of the full moon to spawn all at once! With the help of researchers from the CNRS of Moorea, they dived and conducted numerous experiments to study and witness this unique phenomenon. Taking advantage of this period of incredible richness, Laurent Ballesta did a record dive of 24 hours at over 20 meters.

The story of the Trojan Horse is probably one of the most famous stories ever told: after ten years of bloody war, the Greek coalition decides to lift the siege and depart, but not before leaving at the gates a huge wooden horse, which the Trojans confidently lead into the city. A few hours later, the once invincible Troy goes up in flames. What exactly happened? Is this myth true or false?

The octopus is a close cousin of the oyster and snail. And yet, even by human standards the multi-limbed creature is considered highly intelligent. From Spain to Vancouver Island to Capri, Italy, scientists are testing the brain-power of the mysterious and mythic octopus.

Janusz, a self-confident 60-year old, an incredibly active person and an accomplished diver, suffers a stroke which leaves him paralyzed. Rehabilitation and assistance of his partner Asia help him regain mobility and improve his functions. He is still struggling with speech and the only person who understands what he says is Asia who interprets him for the world. What keeps Janusz going and motivates to carry on is his big dream - he would like to dive again, despite major hazard for his health and life. His goal is to travel to beautiful but perilous Blue Hole in Dahab, Egypt which poses a challenge even to fit divers.

Gombessa Expedition 4 Laurent Ballesta went to observe a gathering of thousands of groupers during the full moon of June 2014 (Le mystère mérou) in the southern pass of the Polynesian atoll of Fakarava, where he discovered a pack of over seven hundred grey sharks. How can this unprecedented density be explained? Could it be that social behaviors govern this wild horde? During three years of preparation, he and the other divers on his international scientific team tamed their fear by abandoning the defensive reflexes that provoke shark aggression, with the aim of slipping into the heart of the raging pack to study and film it from the inside. Sharks fitted with microchips, receiving antennas, hydrophones, an ark of 32 synchronized cameras...: a whole technological arsenal is mobilized for the project. As the groupers approach for their annual spawning, what battle plan will the sharks deploy?

They have bones, no teeth and can grow up to 17 meters long: Oarfish. As the longest bony fish in the world resembles a silver reptile, it is surrounded by various legends of sea serpents and sea monsters. The documentary shows the rarely seen sea creatures in their natural environment. For two years, divers filmed the fascinating creatures from the deep sea around 60 kilometers off the coast of the Côte d'Azur.

With the aid of modern technology, reveal the unknown behavior of some unusual species of shark: lemon sharks and their white-tip reef counterparts.

Shedding a new light in the deepest depths of the Adriatic sea, a modern fairy tale that renews the spirit of underwater exploration.