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Hydrocarbons, in particular methane, in bottom sediments are able to form accumulations together with chemical elements and inorganic compounds. Such elements are indicators of the presence of hydrocarbons. Their establishment in certain areas of the water area can make a serious contribution to geological exploration. This paper examines the relationship of the areas of methane concentration and chemical composition of bottom sediments in the southern part of the Tatar strait and the northern circuit of the central depression of the sea of Japan. A connection of methane was found with elements such as S, Mn, Sr, Cu, Zn, Pb and Ni. The strong correlation of methane with S. There is a medium and weak connection of methane with Cu, Zn, Mn, Ni, Sr. The main concentration of methane observed in the western part of Terney trough and on uplift-shift disturbances of the 46th parallel. Installed indicator elements and geochemical studies can be used for further analysis of the distribution patterns of hydrocarbon deposits in the area.

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