Hydrological buoy device for marine environment monitoring

The invention provides a hydrological buoy device for marine environment monitoring, and relates to the technical field of marine environment monitoring, and the hydrological buoy device comprises a floating part which floats on the water surface and can be in contact with external force; the stabilizing part suspends in water, is fixedly connected with the floating part, guides the gravity centers of the floating part and the stabilizing part to converge after being connected with the floating part, and is positioned in water; all the fin tooth parts are arranged along the outer surface of the stabilizing part; when the floating part makes contact with external force and deflects towards a certain side, the stabilizing part drives the fin tooth part corresponding to the side to push water flow so as to limit the deflection amount of the floating part, the amplitude of the floating part in the up-down or inclination process can be reduced through cooperation of the stabilizing part and the multiple sets of fi