The Oregon Institute of Marine Biology (or OIMB) is the marine station of the University of Oregon. This 100-acre (0.40 km2) marine station is located in Charleston, Oregon at the mouth of Coos Bay. Currently, OIMB is home to several permanent faculty members and a number of graduate students. OIMB is a member of the National Association of Marine Laboratories (NAML). In addition to graduate research, undergraduate classes are offered year round, including marine birds and mammals, estuarine biology, marine ecology, invertebrate zoology, molecular biology, biology of fishes, biological oceanography, and embryology.