I want to get out in the water. I want to see fish, real fish, not fish in a laboratory.

I've had the joy of spending thousands of hours under the sea. I wish I could take people along to see what I see, and to know what I know.

The Earth is a unique system in the universe, the only planet we know of that's hospitable for humankind.

The diversity of life on Earth, generally, is astonishing. But despite those large numbers, it's also important to recognize that every species, one way or another, is vulnerable to extinction. And in our time on Earth... our impact on the diversity of life has been profound.

What we put into the atmosphere in terms of burning fuel is unprecedented.

As a child, I was aware of the widely-held attitude that the ocean is so big, so resilient that we could use the sea as the ultimate place to dispose of anything we did not want, from garbage and nuclear wastes to sludge from sewage to entire ships that had reached the end of their useful life.

Our job is to keep what is working intact and not destroy what we have got.