According to the Bureau of Labor Statistics, marine biologists are included in the occupational category of zoologists and wildlife biologists, a group earning an average of $57,710 per year. This equates to approximately $27.74 per hour.
Earnings in this profession vary based on work location, employer, experience and educational background. The top earning professionals in the marine biology field exceeded $95,430 annually in 2012, and those earning in the bottom 10 percent of the profession averaged less than $37,100 in the same year. Top earnings are recorded for those working for the federal government. The projected job growth is expected to be approximately 5 percent, which is slow in comparison with other professions.