Ocean biogeochemical models help us understand how carbon moves through the ocean and affects the climate. These models use simplified processes to simulate both inorganic and organic carbon cycles. The focus is on the carbon cycle, but other important cycles are also considered. Recent advancements in this field include studying how human activities are impacting the ocean's ability to absorb carbon and how this is leading to ocean acidification. Scientists are working to make these models more accurate by combining them with real observations. This research provides valuable resources for those interested in learning more about marine biogeochemical modeling.