Life in oceans, lakes, and rivers—from whales and coral reefs to deep-sea creatures, fish hatcheries, and toxic algae blooms.
Top pay: highest pay, longest training
Marine Biotechnologist: Finds medicines, enzymes, and materials in ocean organisms. Typical pay $110k.
Marine Laboratory Director: Runs a coastal marine research station for a university or institute, managing boats, labs, staff and funding and hosting visiting scientists. Typical pay $150k.
Mid pay: solid pay, degree or apprenticeship
Marine Biologist: Studies ocean life—from plankton to whales—and how it responds to fishing, pollution, and warming seas. Typical pay $72k.
Biological Oceanographer: Studies how ocean currents, chemistry, and life work together across the whole sea. Typical pay $95k.
Deep-Sea Biologist: Explores the deepest, darkest parts of the ocean and discovers creatures no one has ever seen. Typical pay $95k.
Marine Science Professor: Teaches college marine science and leads ocean research projects. Typical pay $95k.
Fisheries Biologist: Studies fish populations to decide how many can be caught while keeping them healthy. Typical pay $70k.
Marine Mammal Scientist: Studies whales, dolphins, seals, and manatees—their behavior, health, and survival. Typical pay $85k.
Coral Reef Scientist: Studies and restores coral reefs threatened by warming seas. Typical pay $62k.
Limnologist: Studies lakes, rivers, and wetlands—their water chemistry, algae, and fish. Typical pay $72k.
Phycologist (Algae Scientist): Studies algae—from toxic blooms in lakes to seaweed farms and algae biofuels. Typical pay $72k.
Aquaculture Biologist: Raises fish, oysters, and seaweed on farms, keeping them healthy and growing. Typical pay $62k.
Scientific Diver: Dives for science—collecting samples, surveying reefs, and installing underwater instruments. Typical pay $58k.
NOAA Corps Officer: Serves in a little-known uniformed service that drives research ships and flies hurricane-hunter planes for ocean and weather science. Typical pay $85k.
Aquarium Curator: Manages the animals and exhibits at a public aquarium. Typical pay $75k.
Marine Microbiologist: Studies the trillions of microbes that run the ocean's chemistry. Typical pay $80k.
Harmful Algal Bloom Scientist: Tracks and predicts toxic algae blooms that poison water, fish, and people. Typical pay $75k.
Plankton Ecologist: Studies the tiny drifting organisms at the base of ocean and lake food webs. Typical pay $75k.
Fisheries Observer: Rides on commercial fishing boats for weeks to record what's caught, making sure fishing rules are followed. Typical pay $50k.
Aquarist: Cares for fish and sea creatures at aquariums and research facilities. Typical pay $40k.
Fish Hatchery Technician: Raises baby fish at hatcheries to restock rivers and lakes. Typical pay $40k.
Marine Science Lab Technician: Keeps a marine research lab running—maintaining seawater tanks, equipment, and samples. Typical pay $45k.
Marine Science Educator: Teaches kids and the public about ocean life at aquariums, science centers, and summer camps. Typical pay $42k.
Freshwater Mussel Propagation Technician: Raises baby freshwater mussels in hatcheries to restock rivers, saving some of the most endangered animals in North America. Typical pay $46k.
Career Universe is an early version. Pay, training and AI-risk figures are estimates to start your own research, not verified facts. The research was written with AI research assistants, checked by validation scripts and spot-checked by hand. Check anything important with schools, employers and official sources. How the numbers work.