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.

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

I actually love diving at night; you see a lot of fish then that you don't see in the daytime.

I find the lure of the unknown irresistible.

The Arctic is an ocean. The southern pole is a continent surrounded by ocean. The North Pole is an ocean, or northern waters. It's an ocean surrounded by land, basically.

I hope that someday we will find evidence that there is intelligent life among humans on this planet.

With knowing comes caring.