Bruce Stewart received his Bachelor of Science in Zoology at the University of California at Davis and completed graduate studies in marine science at Moss Landing Marine Laboratories. He is former Director of Public Programs at the Birch Aquarium, and served as Program Curator at Monterey Bay Aquarium and Education Director at Texas State Aquarium.

He was Director of Student Programs at the Lawrence Hall of Science, University of California, Berkeley, and served as co-investigator for the Oceanic Society's study in Belize on Turneffe Atoll biodiversity, and has worked as a naturalist since 1996 on various natural history programs in Baja and Central America. He is currently works as a consultant in the field of science education.