Robert Ballard Quotes: There are more active volcanoes beneath the sea than on land by two orders of magnitude. ...

There are more active volcanoes beneath the sea than on land by two orders of magnitude. (Robert Ballard)

Robert Ballard Quotes Pictures

Robert Ballard Quotes: There are more active volcanoes beneath the sea than on land by two orders of magnitude.

Robert Ballard Quotes: There are more active volcanoes beneath the sea than on land by two orders of magnitude.

Robert Ballard Quotes: There are more active volcanoes beneath the sea than on land by two orders of magnitude.

Robert Ballard Quotes: There are more active volcanoes beneath the sea than on land by two orders of magnitude.

Robert Ballard Quotes: There are more active volcanoes beneath the sea than on land by two orders of magnitude.

Robert Ballard Quotes: There are more active volcanoes beneath the sea than on land by two orders of magnitude.

Robert Ballard Quotes: There are more active volcanoes beneath the sea than on land by two orders of magnitude.

Robert Ballard Quotes: There are more active volcanoes beneath the sea than on land by two orders of magnitude.

Robert Ballard Quotes: There are more active volcanoes beneath the sea than on land by two orders of magnitude.

Robert Ballard Quotes: There are more active volcanoes beneath the sea than on land by two orders of magnitude.

Robert Ballard Quotes: There are more active volcanoes beneath the sea than on land by two orders of magnitude.

Robert Ballard Quotes: There are more active volcanoes beneath the sea than on land by two orders of magnitude.

Robert Ballard Quotes: There are more active volcanoes beneath the sea than on land by two orders of magnitude.

Robert Ballard Quotes: There are more active volcanoes beneath the sea than on land by two orders of magnitude.

Robert Ballard Quotes: There are more active volcanoes beneath the sea than on land by two orders of magnitude.