National Geographic : 1980 May
National Geographic takes ...with the exciting chronicles of the eep! For most of its 92 years, the National Geographic Society has been involved in oceanographic exploration. Thanks to our members and the dedication of a bold new breed of undersea pioneers, more progress has been made in the past four decades than in thousands of years previous. Our newest publication offers you the thrill of adventure and historic discoveries on this vast frontier. Author Sylvia A. Earle with co-author and photographer Al Giddings.