Marine biology and aquaculture start from the same science but lead to very different work: one studies how ocean life survives in the wild, while the other raises fish, shellfish, and seaweed to supply food and restock wild populations.
When you’re weighing a marine biology vs aquaculture degree, especially as a career changer, that difference shapes your daily tasks, the employers who hire you, and how much education the work requires.
The choice isn’t always either-or. Some programs combine both fields, such as the Bachelor of Science in Marine Biology and Sustainable Aquaculture at Unity Environmental University, adding a third option to weigh alongside each path on its own.
What Is the Difference Between a Marine Biology and Aquaculture Degree?
The two degrees differ most in scope. A marine biology degree covers the full range of ocean life, from plankton and coral reefs to fish and marine mammals, along with the ecosystems they depend on. An aquaculture degree narrows that focus to the species people raise and the responsible methods used to raise them.
In practical terms, marine biology is about understanding how ocean life works and what affects it. Its central questions are about wild populations: why a species is declining, how it responds to changing conditions, and what it needs to recover.
If you’re wondering what aquaculture is, it’s the farming side of aquatic science. Rather than studying species in the wild, aquaculture focuses on reliably producing them under controlled conditions while keeping that production from harming the surrounding environment.
Both degrees build on the same foundation in biology, chemistry, and ecology, so early coursework often looks similar. They diverge in the kinds of problems you learn to solve. Marine biology prepares you to answer research questions and turn the findings into conservation decisions. Aquaculture prepares you to solve operational ones, such as how to raise healthy stock efficiently and sustainably, season after season.
What Does a Marine Biology Degree Cover?
A marine biology degree builds a broad scientific foundation in the organisms and systems that make up the ocean. Marine biology courses usually include:
- Marine ecology: How organisms interact with each other and with habitats such as reefs, estuaries, and the open ocean
- Physiology and behavior: How marine species, from fish to marine mammals, move, feed, reproduce, and adapt to their surroundings
- Oceanography: The physical and chemical properties of the ocean, including currents, temperature, and salinity
- Field and lab methods: Collecting samples, running surveys, and analyzing data
Because the coursework is so research-driven, this path suits people who enjoy investigating questions, working with data, and spending time in the field.
Many research roles favor a graduate degree, so a bachelor’s in marine biology is often a first step rather than a final one. If you’re also weighing a conservation focus, the differences between marine conservation biology and marine biology degrees are worth understanding too.
What Does an Aquaculture Degree Cover?
An aquaculture degree builds a more applied foundation, centered on the systems and practices used to raise aquatic species. As an aquaculture major, you’ll typically study:
- Sustainable aquaculture practices: Methods for raising fish, shellfish, and seaweed while limiting waste, disease, and impacts on surrounding waters
- Fish health and nutrition: Keeping farmed species healthy, well fed, and free from disease and stress
- Aquaculture systems: Designing and operating the tanks, ponds, net pens, and recirculating water systems that hold farmed species
- Ichthyology: The study of fish biology, from anatomy and growth to reproduction
Because so much of the coursework applies science to day-to-day operations, this path suits people who like solving practical problems and seeing direct results from their work.
Education requirements in aquaculture depend on the role. Some technician and hatchery positions accept candidates with an associate degree, technical training, or relevant field experience, while management, research, and fish health roles typically require a bachelor’s degree or higher.
Aquaculture degrees are also less common than marine biology degrees. College Factual identifies just 17 schools in the United States offering degrees in aquaculture, so if you’re comparing aquaculture schools, it’s worth looking closely at how each program balances aquaculture with broader marine science.
Marine Biology vs Aquaculture Careers and Salary
Both degrees lead to work in aquatic science, but the day-to-day jobs differ, and so does the pay. In both fields, earnings tend to rise with experience, specialized skills, and advanced education.
Careers With a Marine Biology Degree
Marine biology careers tend to center on research, conservation, and education, with employers including universities, government agencies, aquariums, conservation organizations, and environmental consulting firms. Common roles include:
| Role | What They Do | Typical Education |
| Marine biologist | Studies marine species and ecosystems, often through a mix of fieldwork and lab research | Bachelor’s degree; graduate degree for most research roles |
| Marine conservationist | Works to protect species and habitats through monitoring, restoration, and management planning | Bachelor’s degree; master’s degree often preferred for leadership roles |
| Environmental educator | Helps visitors and students understand marine life at aquariums, nature centers, and parks | Bachelor’s degree |
When it comes to marine biology salary, the U.S. Bureau of Labor Statistics (BLS) doesn’t track marine biologists separately. The closest category, zoologists and wildlife biologists, earned a median of $76,780 in May 2025.
Careers With an Aquaculture Degree
Aquaculture careers focus on producing and managing aquatic species, with employers ranging from fish and shellfish farms and hatcheries to state and federal restocking programs, research facilities, and seafood companies. Aquaculture jobs include:
| Role | What They Do | Typical Education |
| Aquaculture technician | Monitors water quality, feeds and cares for stock, and keeps systems running smoothly at farms and hatcheries | Associate degree, technical training, or a bachelor’s degree |
| Aquaculture farm manager | Oversees production, staff, budgets, and operations for an aquaculture facility | Bachelor’s degree or significant hands-on experience |
| Fisheries biologist | Studies fish populations and supports hatchery and restocking programs that sustain wild fisheries | Bachelor’s degree; graduate degree for research roles |
As with marine biology, BLS doesn’t track aquaculture roles separately for salary purposes. It groups aquaculture managers with farmers, ranchers, and other agricultural managers, who earned a median of $89,900 in May 2025. That figure excludes self-employed workers, who make up a large share of the occupation, so earnings for independent farm owners can vary widely.
The field’s role in food production is also expanding. According to NOAA Fisheries, aquaculture now supplies more than half of all seafood produced for human consumption worldwide, and U.S. aquaculture creates jobs and business opportunities in coastal communities.
How to Choose Between a Marine Biology and Aquaculture Degree
With a clear picture of what each degree covers, the decision comes down to how you want to spend your working days and how soon you want to get there. A few questions can help you narrow it down:
- Where do you want your work to make a difference? If you’d like to contribute to research and conservation decisions, marine biology is the natural fit. If you’d rather see the direct results of your work in healthy stock and reliable food production, aquaculture is the stronger match.
- How soon do you want to enter the field? Because aquaculture offers more entry points for applied roles, it can get you into paid work faster, while a marine biology bachelor’s often lays the foundation for graduate study.
- Do you want to keep both options open? Some programs combine marine biology and aquaculture in a single degree, so you build research knowledge and production skills at the same time.
After you’ve settled on a direction, compare programs carefully. When you look at marine biology schools, check how much field and lab work each program includes, and whether its format fits around your work and other commitments. If you’re still deciding between the two fields, a combined program can be a practical choice, since it lets you build a foundation in both before committing to one.
Work Toward a Career in Marine Biology and Aquaculture at Unity
Whether you end up as a marine biologist, an aquaculture farm manager, or somewhere in between, your career will draw on the same core science. The right degree gives you that foundation while you figure out which kind of work suits you best.
At Unity Environmental University, the BS in Marine Biology and Sustainable Aquaculture pairs marine biology courses, such as Marine Mammal and Seabird Biology, with aquaculture courses like Sustainable Aquaculture Techniques and Ichthyology and Fish Health. It also includes a course in field research across both disciplines.
The program is delivered through remote learning, with up to eight terms each year, and it accepts up to 90 transfer credits so that previous college coursework can count toward your degree.
Apply now and take your first step toward a career working with ocean life.
Marine Biology and Aquaculture Degree FAQs
Is Aquaculture Part of Marine Biology?
Aquaculture is a related but distinct field. Both share the same core science, but marine biology focuses on studying and protecting wild ocean life, while aquaculture focuses on responsibly raising aquatic species for food, restocking, and research.
Is Aquaculture a Good Career?
It can be, especially if you want active, field-based work with living systems. Aquaculture offers entry points for candidates at different education levels, and the U.S. Bureau of Labor Statistics (BLS) reports that farmers, ranchers, and other agricultural managers, the category that includes aquaculture managers, earned a median of $89,900 in May 2025.
Can You Study Marine Biology and Aquaculture Together?
Yes. Some bachelor’s programs combine marine biology and aquaculture in a single degree, including remote-learning options for working adults. A combined degree lets you build a broad foundation before choosing a specific career path.
