I experimented with all possible maneuvers-loops, somersaults and barrel rolls. I stood upside down on one finger and burst out laughing, a shrill, distorted laugh. Nothing I did altered the automatic rhythm of the air. Delivered from gravity and buoyancy, I flew around in space.

There was wildlife, untouched, a jungle at the border of the sea, never seen by those who floated on the opaque roof. Describing his early experience, in 1936, when a fellow naval officer, Philippe Tailliez, gave him goggles to see below the Mediterranean Sea surface.

We must alert and organise the world's people to pressure world leaders to take specific steps to solve the two root causes of our environmental crises - exploding population growth and wasteful consumption of irreplaceable resources. Overconsumption and overpopulation underlie every environmental problem we face today.

With earth's burgeoning human population to feed we must turn to the sea with understanding and new technology. We need to farm it as we farm the land.

The reason I love the sea I cannot explain - it's physical. When you dive you begin to feel like an angel. It's a liberation of your weight.

In order to save the planet it would be necessary to kill 350,000 people per day.

There are no boundaries in the real Planet Earth. No United States, no Soviet Union, no China, no Taiwan...Rivers flow unimpeded across the swaths of continents. The persistent tides - the pulse of the sea - do not discriminate; they push against all the varied shores on Earth.