The ocean is our life support system. No blue, no green. It's really a miracle that we have got a place that works in our favor.

We still have 10 percent of the sharks. We still have half of the coral reefs. However, if we wait another 50 years, opportunities might well be gone.

You should know what is taken out of the ecosystem in order to give you a moment's sustenance.

With every drop of water you drink, every breath you take, you're connected to the sea. No matter where on Earth you live.

We've got to alter our fossil fuel dependence and go to other energy sources.

Ten percent of the big fish still remain. There are still some blue whales. There are still some krill in Antarctica. There are a few oysters in Chesapeake Bay. Half the coral reefs are still in pretty good shape, a jeweled belt around the middle of the planet. There's still time, but not a lot, to turn things around.

When I write a scientific treatise, I might reach 100 people. When the 'National Geographic' covers a project, it communicates about plants and fish and underwater technology to more than 10 million people.