Don Walsh (born November 2, 1931) is an American oceanographer, explorer and marine policy specialist. He and Jacques Piccard were aboard the bathyscaphe Trieste when it made a record maximum descent into the Mariana Trench on January 23, 1960, the deepest point of the world's oceans. The depth was measured at 35,813 feet (10,916 m), but later and more accurate measurements have measured it at 35,798 feet (10,911 m).

Walsh has been associated with ocean science, engineering, and marine policy for more than 50 years. He was commissioned as an officer in the United States Navy upon graduation from the United States Naval Academy in 1954. He attained the rank of Captain by the time he retired. He spent 15 years at sea, mostly in submarines, and was a submarine commander. He worked with ocean-related research and development for the Navy. Serving as Dean of Marine Programs and Professor of Ocean Engineering at the University of Southern California, Walsh initiated and directed the university's Institute for Marine and Coastal Studies. In 1989 his company, International Maritime Incorporated, contracted a joint venture with the P.P. Shirshov Institute of Oceanology to establish an underwater maintenance company, Soyuz Marine Service, which continues to operate in the Russian Federation.

Sylvia Alice Earle (born August 30, 1935 in Gibbstown, New Jersey) is an American oceanographer. She was a chief scientist at the U.S. National Oceanic and Atmospheric Administration from 1990 to 1992. Since 1995 she has been a National Geographic explorer-in-residence, sometimes called "Her Deepness" or "The Sturgeon General".Sylvia Earle was named by Time Magazine as the first Hero for the Planet. She is an oceanographer, explorer, author, lecturer, Explorer-in-Residence at the National Geographic Society, leader of the Sustainable Seas Expeditions, council chair for the Harte Research Institute for the Gulf of Mexico Studies at Texas A&-Corpus Christi, founder and chairman of the Deep Search Foundation, and finally the chair of the Advisory Council for the Ocean in Google Earth. Sylvia Earle has founded three companies which included Deep Ocean Exploration and Research (DOER Marine Operations). (Earle, 2009)

Earle received a B.S. degree from Florida State University (1955) and a M.S. (1956) and Ph.D. (1966) from Duke University. She was Curator of Phycology at the California Academy of Sciences (1979–1986) and a Research Associate at the University of California, Berkeley (1969–1981), Radcliffe Institute Scholar (1967–1969) and Research Fellow or Associate at Harvard University (1967–1981).