I love music of all kinds, but there's no greater music than the sound of my grandchildren laughing; my kids, too.

People ask: Why should I care about the ocean? Because the ocean is the cornerstone of earth's life support system, it shapes climate and weather. It holds most of life on earth. 97% of earth's water is there. It's the blue heart of the planet - we should take care of our heart. It's what makes life possible for us. We still have a really good chance to make things better than they are. They won't get better unless we take the action and inspire others to do the same thing. No one is without power. Everybody has the capacity to do something.

By the end of the 20th century, up to 90 percent of the sharks, tuna, swordfish, marlins, groupers, turtles, whales, and many other large creatures that prospered in the Gulf for millions of years had been depleted by overfishing.

If you make the choice to just go with the flow, that is a choice to make a difference in a negative way.

With respect to the ocean being the heart of our blue planet: We are often asked, 'How much protection is enough?' We can only answer with another question: How much of your heart is worth protecting?

The most important part is to take on the challenge of protecting the ocean as if your life depends on it - because it does.

Far and away, the greatest threat to the ocean, and thus to ourselves, is ignorance. But we can do something about that.