Does the ocean hold the key to our future? The few deep-sea expeditions to explore the ocean floor have brought back a treasure-trove of knowledge that has radically transformed our vision of the Earth’s history, the formation of the continents and even the origins of life itself. Energies explores the deepest secrets of the planet.

	The creatures of the abyss Several hundred fathoms beneath the sea, in a cold, dark world of crushing pressure, communities of bizarre animals have managed to survive. Discovered in the late nineteenth century, but studied only for the past thirty years, this abyssal life is beginning to divulge its secrets and provide new clues about the origins of life.

	20,000 remedies under the sea? Does the ocean contain substances which can serve to make the medicines of tomorrow? Many researchers believe it does. Sharks, sand worms, sea sponges and algae are just a few of the intriguing possibilities that may provide remedies for today’s incurable diseases.

	The irresistible attraction of the ocean depths Humanity has been exploring the oceans since the dawn of civilization. Although the technology has certainly become more sophisticated in recent decades, the techniques used in ancient times were already quite elaborate. Energies highlights the major stages of humanity’s exploration of the deep.

	The challenges of the deep ocean Offshore oil exploration and production operations are today being carried out in water more than 1,200 meters deep. The extreme conditions encountered at that depth not only pose real technological and environmental challenges, but also require major efforts to ensure the safety of both men and facilities. Today’s deep offshore is a splendid human and industrial adventure.

	The ocean holds the key to understanding the evolution of our planet Xavier Le Pichon, professor at the Collège de France.

	International cooperation is a real plus Jean-François Minster, President and CEO of Ifremer