A marine biologist was a biologist who studied in the field of marine biology, that is, the science related to oceanography, specifically involved in the study of marine organisms. A marine biologist who specifically studied whales and related species was known as a cetacean biologist. Gillian Taylor was a marine biologist who worked with the humpback whales, George and Gracie, at Sausalito, California's Cetacean Institute in 1986. Amanda Rogers' adoptive parents were Starfleet marine biologists, stationed in the Bilaren system as of 2369. (TNG: "True Q" )