It's taken us a short time to change the nature of nature. In my lifetime, more change than during all preceding human history put together.

You don't have to touch the ocean for the ocean to touch you

There is an enormous amount to be learned about the sea; like most wildernesses, it has great potential.

The ocean is dying, and we have no place to escape to if this experiment doesn't go in our favor.

If we have a hope of really understanding our place in nature and of carving out a place for ourselves that is sustainable, it's primarily because of the new level of communication. It used to be, 'What you don't have in your mind, you have on your shelf.' But now we have the Web.

The value of sharks' lives is now widely understood to be more important than their value as products. And when you have sharks in an area, it's a sign of good health. They're top predators, which means they feed on old, sick, and slower fish, keeping an entire population healthy.

Any astronaut can tell you you've got to do everything you can to learn about your life support system and then do everything you can to take care of it.