Oceanography major

Oceanography: courses, careers, and where to study

Oceanography studies the chemistry, physics, and motion of ocean water, suiting students drawn to fieldwork, lab analysis, and how the sea, atmosphere, and coastlines interact.

Oceanography, in its chemical and physical form, focuses on the seawater itself rather than the creatures living in it. Students learn what the ocean is made of, how dissolved gases, salts, nutrients, and pollutants enter, transform, and cycle through marine systems, and how the water moves through currents, tides, waves, mixing, and the transport of sediment along coasts and the seafloor. Much of the work connects the ocean to the wider Earth system, tracing how it exchanges heat, carbon, and material with the atmosphere and the land. This sets it apart from marine biology, which centers on organisms, from geology, which centers on rock and landforms, and from broader environmental science, which surveys ecosystems and policy rather than the measurable chemistry and dynamics of the water column.

Most students enter the field through a bachelor's degree in oceanography or a related earth or physical science, with the entry-level role of oceanographer typically reachable at that level, while research and many specialized positions expect graduate study. The degree is hands-on: laboratory courses in water analysis, instrument and sampling methods, sea-going or coastal field experiences aboard research vessels, and a capstone or senior research project are common, alongside heavy grounding in chemistry, physics, calculus, and data analysis. Graduates work for federal and state agencies, environmental and engineering consulting firms, ocean-mapping and survey operations, and university or institute research teams; some roles, such as professional hydrographic surveying, may carry their own certification or state requirements that a student should verify directly.

In federal data for the closely related occupation of geoscientists, except hydrologists and geographers, the U.S. Bureau of Labor Statistics reports a 2024 median wage of $99,240 and projects employment to grow about 3.2% from 2024 to 2034; a bachelor's degree is the typical entry-level education for that occupation. National figures are occupation-wide medians across all experience levels, not starting wages or graduate outcomes.