William S. Reeburgh's 2007 review summarizes the biogeochemistry of methane in the ocean. It discusses the global methane budget, the role of the ocean in this budget, and the sources and sinks of methane in the ocean. The review highlights the importance of microbial oxidation of methane in the ocean, which effectively consumes methane from external sources to low nanomolar levels. It also discusses the production of methane in the ocean, including the surface mixed layer methane maximum, and the factors that influence methane production and oxidation. The review covers various methods used to measure methane in the ocean, including water column, sediment, and headspace measurements, as well as the use of natural isotopes to study methane sources and processes. It also discusses recent developments in the study of methane, including the use of biomarkers, genomics, and benthic communities. The review concludes with a summary of the ocean's role in the global methane budget and future research directions. The paper emphasizes the importance of understanding the ocean's role in the global methane cycle, particularly in relation to microbial oxidation and the balance between methane sources and sinks. The review also highlights the need for further research on methane sources and sinks, including the use of natural isotopes and other advanced techniques to better understand the ocean's contribution to the global methane budget.William S. Reeburgh's 2007 review summarizes the biogeochemistry of methane in the ocean. It discusses the global methane budget, the role of the ocean in this budget, and the sources and sinks of methane in the ocean. The review highlights the importance of microbial oxidation of methane in the ocean, which effectively consumes methane from external sources to low nanomolar levels. It also discusses the production of methane in the ocean, including the surface mixed layer methane maximum, and the factors that influence methane production and oxidation. The review covers various methods used to measure methane in the ocean, including water column, sediment, and headspace measurements, as well as the use of natural isotopes to study methane sources and processes. It also discusses recent developments in the study of methane, including the use of biomarkers, genomics, and benthic communities. The review concludes with a summary of the ocean's role in the global methane budget and future research directions. The paper emphasizes the importance of understanding the ocean's role in the global methane cycle, particularly in relation to microbial oxidation and the balance between methane sources and sinks. The review also highlights the need for further research on methane sources and sinks, including the use of natural isotopes and other advanced techniques to better understand the ocean's contribution to the global methane budget.