Buoyed by water, he can fly in any direction - up, down, sideways - by merely flipping his hand. Under water, man becomes an archangel.

I swam across the rocks and compared myself favorably with the sars. To swim fishlike, horizontally, was the logical method in a medium eight hundred times denser than air. To halt and hang attached to nothing, no lines or air pipe to the surface, was a dream. At night I had often had visions of flying by extending my arms as wings. Now I flew without wings. (Since that first aqualung flight, I have never had a dream of flying.)

Through the window of my mask I see a wall of coral, its surface a living kaleidoscope of lilac flecks, splashes of gold, reddish streaks and yellows, all tinged by the familiar transparent blue of the sea.

Overconsumption and overpopulation underlie every environmental problem we face today

We are human beings, and we have faith, and we have hope

Mankind has probably done more damage to the Earth in the 20th century than in all of previous human history.

The sea is not a bargain basement.