This course in ocean optics is intended to be a practical introduction to the theory and use of ocean optics. Ocean optics spans the areas of radiative transfer within seawater, the role of particles and dissolved organic matter in modifying the inherent optical properties and the use of remotely sensed ocean color to measure biogeochemical properties and processes within the ocean. The course will include theory of inherent and apparent optical properties, the use of modeling tools to propagate light within seawater and the practical use of in situ instrumentation to make measurements of inherent and apparent optical properties within the ocean.