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The undiscovered places that are interesting to me are these places that contain bits of our disappearing history, like a ghost town.

We are concerned that, in a few years time, this place of discovery, with its wealth of human fossils, the like of which can be found nowhere else in the world, could be completely destroyed.

I think there's so much we don't know and the unknown in the ocean; every 10 years or so, we find some fossil that's been there before mankind.

We've explored very little of the ocean. We really don't know what's out there. But people think we've figured it all out.

I have come to believe that this is a mighty continent which was hitherto unknown.

There is nothing as mysterious as a fact clearly described. I photograph to see what something will look like photographed.

Don't you see what's at stake here? The ultimate aim of all science to penetrate the unknown. Do you realize we know less about the earth we live on than about the stars and the galaxies of outer space? The greatest mystery is right here, right under our feet.

Our knowledge is a little island in a great ocean of nonknowledge.

We are finding new areas in the ocean every day. It's as alien as going to outer space.

There are so many previously unknown sites and structures all over the world. And I think most importantly what satellites help to show us is we've actually only found a fraction of a percent of ancient settlements and sites all over the world.