Аннотация:Complex measurements of hydrological parameters and gas fluxes at the new methane seep recently discovered at Cape Fiolent (Crimean coast) were carried out. A lower values of water temperature T and concentration of dissolved oxygen O2 outer of the seepage area in comparison with the values above the gas point were registered. Episodes of an abrupt T and O2 increase with a subsequent decrease were noted. The estimation of the bubble gas fluxes was made by two different methods: video registration and trap method. The estimated flux was about 60 and 22.5 L/day out of entire seepage area respectively. High CH4 concentrations in sea-surface water above seep points were measured.