This document outlines the structure of an introductory marine science/oceanography course. It describes both a traditional structure and an alternative approach focused on discovering the oil/plastics cycle. The traditional structure covers topics like the history and formation of oceans, plate tectonics, ocean circulation, marine life and ecosystems. The alternative approach has students discover their personal connection to the oil/plastics cycle on day one. They then build a mind map tracing the cycle from oil formation to plastic ingestion by seabirds. Throughout the course, exercises related to the mind map improve scientific skills and probe the geoethics of ocean resource use.