Ignorance is the biggest problem of all for the ocean - and for many other things as well.

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.

We need to respect the oceans and take care of them as if our lives depended on it. Because they do.

Santa Monica Bay is less polluted today than when I first moved to the area in the 1970s, because actions have been taken to avoid putting some of the noxious materials into the sea. I think people are more aware than they once were, the air is cleaner, water generally is, in spite of the fact that there are more people.

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

We are not only warming the ocean and the planet as a whole, but we are also acidifying the ocean and changing its chemistry.

'Green' issues at last are attracting serious attention, owing to critically important links between the environment and the economy, health, and our security.