Bernard Le Boeuf was born in southern Louisiana. He attended UC Berkeley, earning his PhD in experimental psychology in 1966. While at Berkeley, he also studied zoology and experimental biology. He arrived at UCSC in 1967 as a member of the psychology board and of Crown College. He already had a strong interest in evolutionary biology and participated in the biology board’s meetings as an outside member. He also began working with biology professor Richard Peterson on seal and sea lion research. After Peterson’s death, the biology board invited Le Boeuf to take Peterson’s place on the board, and he accepted.
Le Boeuf is internationally known as a pioneer of the field of marine mammal behavior. He has focused on the social and reproductive behavior of elephant seals (Mirounga angustirostris), as well as their diving, foraging, and migratory behavior. Le Boeuf has conducted extensive research on the behavioral ecology and physiology of a variety of marine mammals, and also investigated the effects of environmental pollutants such as DDT on marine mammals.