Menard served many roles during his career as a marine geologist.

Ballard enters the picture as a young marine geologist in the late 1960's.

The move represents a significant career change for Dr. Ballard, a marine geologist.

"I'm not the world's most notable marine geologist, either," Caspar agreed.

The group calls on the experience of land and marine geologists, sedimentologists and coastal engineers.

His friends and family worry that, at the age of 54, the marine geologist is growing too big a belly.

"Won't marine geologists have a ball with this little discovery?"

Godzilla, name given by marine geologists to a hydrothermal vent in the Pacific.

The marine geologists said their continuing surveys had made another intriguing discovery.

Earlier today, Paul Easton, the marine geologist, came to see me.